diff --git a/code/_helpers/atmospherics.dm b/code/_helpers/atmospherics.dm
index b1489f60ed5..045cc0f9167 100644
--- a/code/_helpers/atmospherics.dm
+++ b/code/_helpers/atmospherics.dm
@@ -45,4 +45,4 @@
 	if(P)	return atmosanalyzer_scan(src, src.P.air_contents, user)
 
 /obj/item/flamethrower/atmosanalyze(var/mob/user)
-	if(ptank)	return atmosanalyzer_scan(src, ptank.air_contents, user)
+	if(gas_tank)	return atmosanalyzer_scan(src, gas_tank.air_contents, user)
diff --git a/code/game/jobs/job/engineering.dm b/code/game/jobs/job/engineering.dm
index d35b0939cfe..de2cabf214a 100644
--- a/code/game/jobs/job/engineering.dm
+++ b/code/game/jobs/job/engineering.dm
@@ -35,7 +35,7 @@
 
 	uniform = /obj/item/clothing/under/rank/chief_engineer
 	head = /obj/item/clothing/head/hardhat/white
-	belt = /obj/item/storage/belt/utility
+	belt = /obj/item/storage/belt/utility/ce
 	tab_pda = /obj/item/modular_computer/handheld/pda/engineering/ce
 	wristbound = /obj/item/modular_computer/handheld/wristbound/preset/pda/engineering/ce
 	tablet = /obj/item/modular_computer/handheld/preset/engineering/ce
diff --git a/code/game/objects/items.dm b/code/game/objects/items.dm
index 55c622c9649..1858fbdd718 100644
--- a/code/game/objects/items.dm
+++ b/code/game/objects/items.dm
@@ -944,3 +944,6 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 		if(SP.current_slide == src && (SP.projection in view(world.view, user)))
 			return TRUE
 	return FALSE
+
+/obj/item/proc/get_belt_overlay() //Returns the icon used for overlaying the object on a belt
+	return mutable_appearance('icons/obj/clothing/belt_overlays.dmi', icon_state)
diff --git a/code/game/objects/items/devices/multitool.dm b/code/game/objects/items/devices/multitool.dm
index 210aedc63f1..0ea4f187559 100644
--- a/code/game/objects/items/devices/multitool.dm
+++ b/code/game/objects/items/devices/multitool.dm
@@ -1,6 +1,5 @@
 /**
  * Multitool -- A multitool is used for hacking electronic devices.
- * TO-DO -- Using it as a power measurement tool for cables etc. Nannek.
  *
  */
 
@@ -8,12 +7,11 @@
 	name = "multitool"
 	desc = "Used for pulsing wires to test which to cut. Not recommended by doctors."
 	desc_info = "You can use this on airlocks or APCs to try to hack them without cutting wires."
+	icon = 'icons/obj/contained_items/tools/multitool.dmi'
 	icon_state = "multitool"
 	item_state = "multitool"
-	item_icons = list(
-		slot_l_hand_str = 'icons/mob/items/lefthand_tools.dmi',
-		slot_r_hand_str = 'icons/mob/items/righthand_tools.dmi',
-		)
+	item_icons = null
+	contained_sprite = TRUE
 	flags = CONDUCT
 	force = 5.0
 	w_class = ITEMSIZE_SMALL
@@ -32,6 +30,9 @@
 	var/buffer_name
 	var/atom/buffer_object
 
+	var/datum/integrated_io/selected_io = null
+	var/mode = 0
+
 /obj/item/device/multitool/Destroy()
 	unregister_buffer(buffer_object)
 	return ..()
@@ -81,3 +82,68 @@
 	user.AddTopicPrint(src)
 	MT.interact(src, user)
 	return 1
+
+/obj/item/device/multitool/attack_self(mob/user)
+	if(selected_io)
+		selected_io = null
+		to_chat(user, "<span class='notice'>You clear the wired connection from the multitool.</span>")
+	else
+		..()
+	update_icon()
+
+/obj/item/device/multitool/update_icon()
+	if(selected_io)
+		if(buffer || connecting || buffer_object)
+			icon_state = "multitool_tracking"
+		else
+			icon_state = "multitool_red"
+	else
+		if(buffer || connecting || buffer_object)
+			icon_state = "multitool_tracking_fail"
+		else
+			icon_state = "multitool"
+
+/obj/item/device/multitool/proc/wire(datum/integrated_io/io, mob/user)
+	if(!io.holder.assembly)
+		to_chat(user, "<span class='warning'>\The [io.holder] needs to be secured inside an assembly first.</span>")
+		return
+
+	if(selected_io)
+		if(io == selected_io)
+			to_chat(user, "<span class='warning'>Wiring \the [selected_io.holder]'s '[selected_io.name]' pin into itself is rather pointless.</span>")
+			return
+		if(io.io_type != selected_io.io_type)
+			to_chat(user, "<span class='warning'>Those two types of channels are incompatable.  The first is a [selected_io.io_type], \
+			while the second is a [io.io_type].</span>")
+			return
+		if(io.holder.assembly && io.holder.assembly != selected_io.holder.assembly)
+			to_chat(user, "<span class='warning'>Both \the [io.holder] and \the [selected_io.holder] need to be inside the same assembly.</span>")
+			return
+		selected_io.linked |= io
+		io.linked |= selected_io
+
+		to_chat(user, "<span class='notice'>You connect \the [selected_io.holder]'s '[selected_io.name]' pin to \the [io.holder]'s '[io.name]' pin.</span>")
+		selected_io.holder.interact(user) // This is to update the UI.
+		selected_io = null
+
+	else
+		selected_io = io
+		to_chat(user, "<span class='notice'>You link \the multitool to \the [selected_io.holder]'s [selected_io.name] data channel.</span>")
+
+	update_icon()
+
+/obj/item/device/multitool/proc/unwire(datum/integrated_io/io1, datum/integrated_io/io2, mob/user)
+	if(!io1.linked.len || !io2.linked.len)
+		to_chat(user, "<span class='warning'>There is nothing connected to the data channel.</span>")
+		return
+
+	if(!(io1 in io2.linked) || !(io2 in io1.linked) )
+		to_chat(user, "<span class='warning'>These data pins aren't connected!</span>")
+		return
+	else
+		io1.linked.Remove(io2)
+		io2.linked.Remove(io1)
+		to_chat(user, "<span class='notice'>You clip the data connection between the [io1.holder.displayed_name]'s \
+		'[io1.name]' pin and the [io2.holder.displayed_name]'s '[io2.name]' pin.</span>")
+		io1.holder.interact(user) // This is to update the UI.
+		update_icon()
\ No newline at end of file
diff --git a/code/game/objects/items/devices/scanners.dm b/code/game/objects/items/devices/scanners.dm
index db114649a73..b152e9e9122 100644
--- a/code/game/objects/items/devices/scanners.dm
+++ b/code/game/objects/items/devices/scanners.dm
@@ -322,8 +322,10 @@ BREATH ANALYZER
 /obj/item/device/analyzer
 	name = "analyzer"
 	desc = "A hand-held environmental scanner which reports current gas levels."
-	icon_state = "atmos"
+	icon = 'icons/obj/contained_items/tools/air_analyzer.dmi'
+	icon_state = "analyzer"
 	item_state = "analyzer"
+	contained_sprite = TRUE
 	w_class = ITEMSIZE_SMALL
 	flags = CONDUCT
 	slot_flags = SLOT_BELT
diff --git a/code/game/objects/items/devices/t_scanner.dm b/code/game/objects/items/devices/t_scanner.dm
index 64a12a2e188..89bcae91812 100644
--- a/code/game/objects/items/devices/t_scanner.dm
+++ b/code/game/objects/items/devices/t_scanner.dm
@@ -3,10 +3,12 @@
 /obj/item/device/t_scanner
 	name = "\improper T-ray scanner"
 	desc = "A terahertz-ray emitter and scanner used to detect underfloor objects such as cables and pipes."
+	icon = 'icons/obj/contained_items/tools/t_scanner.dmi'
 	icon_state = "t-ray0"
+	item_state = "t-ray"
+	contained_sprite = TRUE
 	slot_flags = SLOT_BELT
 	w_class = ITEMSIZE_SMALL
-	item_state = "electronic"
 	matter = list(DEFAULT_WALL_MATERIAL = 150)
 	origin_tech = list(TECH_MAGNET = 1, TECH_ENGINEERING = 1)
 	action_button_name = "Toggle T-Ray scanner"
diff --git a/code/game/objects/items/weapons/flamethrower.dm b/code/game/objects/items/weapons/flamethrower.dm
index 8edf6e71d0e..c6efb9d462b 100644
--- a/code/game/objects/items/weapons/flamethrower.dm
+++ b/code/game/objects/items/weapons/flamethrower.dm
@@ -1,9 +1,10 @@
 /obj/item/flamethrower
 	name = "flamethrower"
 	desc = "A flamethrower created by modifying a welding tool to fit an external gas tank."
-	icon = 'icons/obj/flamethrower.dmi'
-	icon_state = "flamethrowerbase"
+	icon = 'icons/obj/contained_items/weapons/flamethrower.dmi'
+	icon_state = "flamethrower"
 	item_state = "flamethrower_0"
+	contained_sprite = TRUE
 	var/fire_sound = 'sound/weapons/flamethrower.ogg'
 	flags = CONDUCT
 	force = 3.0
@@ -20,13 +21,13 @@
 	var/turf/previousturf = null
 	var/obj/item/weldingtool/weldtool = null
 	var/obj/item/device/assembly/igniter/igniter = null
-	var/obj/item/tank/phoron/ptank = null
+	var/obj/item/tank/gas_tank = null
 
 /obj/item/flamethrower/examine(mob/user)
 	..()
 	if(Adjacent(user))
-		if(ptank)
-			to_chat(user, SPAN_NOTICE("Release pressure is set to [throw_amount] kPa. The tank has about [round(ptank.air_contents.return_pressure(), 10)] kPa left in it."))
+		if(gas_tank)
+			to_chat(user, SPAN_NOTICE("Release pressure is set to [throw_amount] kPa. The tank has about [round(gas_tank.air_contents.return_pressure(), 10)] kPa left in it."))
 		else
 			to_chat(user, SPAN_WARNING("It has no gas tank installed."))
 		if(igniter)
@@ -39,8 +40,8 @@
 		qdel(weldtool)
 	if(igniter)
 		qdel(igniter)
-	if(ptank)
-		qdel(ptank)
+	if(gas_tank)
+		qdel(gas_tank)
 
 	return ..()
 
@@ -61,8 +62,10 @@
 	cut_overlays()
 	if(igniter)
 		add_overlay("+igniter[secured]")
-	if(ptank)
-		add_overlay("+ptank")
+	if(istype(gas_tank, /obj/item/tank/phoron))
+		add_overlay("+phoron_tank")
+	else if(istype(gas_tank, /obj/item/tank/hydrogen))
+		add_overlay("+hydro_tank")
 	if(lit)
 		add_overlay("+lit")
 		item_state = "flamethrower_1"
@@ -75,9 +78,9 @@
 /obj/item/flamethrower/afterattack(atom/target, mob/user, proximity)
 	if(proximity)
 		return
-	if(!ptank)
+	if(!gas_tank)
 		return
-	if(ptank.air_contents.get_by_flag(XGM_GAS_FUEL) < 1)
+	if(gas_tank.air_contents.get_by_flag(XGM_GAS_FUEL) < 1)
 		to_chat(user, SPAN_WARNING("\The [src] doesn't have enough fuel left to throw!"))
 		return
 	// Make sure our user is still holding us
@@ -99,9 +102,9 @@
 		if(igniter)
 			igniter.forceMove(T)
 			igniter = null
-		if(ptank)
-			ptank.forceMove(T)
-			ptank = null
+		if(gas_tank)
+			gas_tank.forceMove(T)
+			gas_tank = null
 		new /obj/item/stack/rods(T)
 		qdel(src)
 		return
@@ -125,12 +128,12 @@
 		update_icon()
 		return
 
-	else if(istype(W, /obj/item/tank/phoron))
-		if(ptank)
+	else if(istype(W, /obj/item/tank/phoron) || istype(W, /obj/item/tank/hydrogen))
+		if(gas_tank)
 			to_chat(user, SPAN_WARNING("There appears to already be a tank loaded in \the [src]!"))
 			return
 		user.drop_from_inventory(W, src)
-		ptank = W
+		gas_tank = W
 		update_icon()
 		return
 
@@ -149,7 +152,7 @@
 /obj/item/flamethrower/attack_self(mob/user)
 	if(use_check_and_message(user))
 		return
-	if(!ptank)
+	if(!gas_tank)
 		to_chat(user, SPAN_WARNING("Attach a phoron tank first!"))
 		return
 	var/list/options = list(
@@ -163,10 +166,10 @@
 		return
 	switch(handle)
 		if("Eject Tank")
-			if(!ptank)
+			if(!gas_tank)
 				return
-			user.put_in_hands(ptank)
-			ptank = null
+			user.put_in_hands(gas_tank)
+			gas_tank = null
 			lit = FALSE
 		if("Light")
 			attempt_lighting(user)
@@ -194,10 +197,10 @@
 	if(lit)
 		to_chat(user, SPAN_WARNING("\The [src] is already lit."))
 		return
-	if(!ptank)
+	if(!gas_tank)
 		to_chat(user, SPAN_WARNING("\The [src] doesn't have a tank installed."))
 		return
-	if(ptank.air_contents.get_by_flag(XGM_GAS_FUEL) < 1)
+	if(gas_tank.air_contents.get_by_flag(XGM_GAS_FUEL) < 1)
 		to_chat(user, SPAN_WARNING("\The [src] doesn't have any flammable fuel to light!"))
 		return
 	lit = TRUE
@@ -233,13 +236,13 @@
 
 
 /obj/item/flamethrower/proc/ignite_turf(turf/target)
-	var/datum/gas_mixture/air_transfer = ptank.air_contents.remove_ratio(0.02 * (throw_amount / 100))
+	var/datum/gas_mixture/air_transfer = gas_tank.air_contents.remove_ratio(0.02 * (throw_amount / 100))
 	new /obj/effect/decal/cleanable/liquid_fuel/flamethrower_fuel(target, air_transfer.get_by_flag(XGM_GAS_FUEL) * 15, get_dir(loc, target))
 	for(var/g in air_transfer.gas)
 		if(gas_data.flags[g] & XGM_GAS_FUEL)
 			air_transfer.gas[g] = 0
 	target.assume_air(air_transfer)
-	target.hotspot_expose((ptank.air_contents.temperature*2) + 400, 500)
+	target.hotspot_expose((gas_tank.air_contents.temperature*2) + 400, 500)
 
 /obj/item/flamethrower/full/Initialize()
 	. = ..()
diff --git a/code/game/objects/items/weapons/storage/belt.dm b/code/game/objects/items/weapons/storage/belt.dm
index 8e488ae1638..565d4cc8da1 100644
--- a/code/game/objects/items/weapons/storage/belt.dm
+++ b/code/game/objects/items/weapons/storage/belt.dm
@@ -14,12 +14,20 @@
 	pickup_sound = 'sound/items/pickup/toolbelt.ogg'
 	var/flipped = FALSE
 	var/show_above_suit = FALSE
+	var/content_overlays = FALSE //If this is true, the belt will gain overlays based on what it's holding
 
 /obj/item/storage/belt/proc/update_clothing_icon()
 	if(ismob(src.loc))
 		var/mob/M = src.loc
 		M.update_inv_belt()
 
+/obj/item/storage/belt/update_icon()
+	cut_overlays()
+	if(content_overlays)
+		for(var/obj/item/I in contents)
+			add_overlay(I.get_belt_overlay())
+	..()
+
 /obj/item/storage/belt/verb/toggle_layer()
 	set name = "Switch Belt Layer"
 	set category = "Object"
@@ -34,6 +42,10 @@
 	. = ..()
 	update_flip_verb()
 
+/obj/item/storage/belt/fill()
+	. = ..()
+	update_icon()
+
 /obj/item/storage/belt/proc/update_flip_verb()
 	if(("[initial(icon_state)]_flip") in icon_states(icon)) // Check for whether it has a flipped icon. Prevents invisible sprites.
 		verbs += /obj/item/storage/belt/proc/flipbelt
@@ -86,7 +98,11 @@
 		/obj/item/device/debugger,
 		/obj/item/device/eftpos
 		)
+	content_overlays = TRUE
 
+/obj/item/storage/belt/utility/ce
+	icon_state = "utilitybelt_ce"
+	item_state = "utility_ce"
 
 /obj/item/storage/belt/utility/full
 	starts_with = list(
@@ -258,6 +274,7 @@
 		/obj/item/device/holowarrant,
 		/obj/item/device/radio
 		)
+	content_overlays = TRUE
 
 /obj/item/storage/belt/soulstone
 	name = "soul stone belt"
diff --git a/code/game/objects/items/weapons/tanks/tank_types.dm b/code/game/objects/items/weapons/tanks/tank_types.dm
index 9e283afce3e..482d567af43 100644
--- a/code/game/objects/items/weapons/tanks/tank_types.dm
+++ b/code/game/objects/items/weapons/tanks/tank_types.dm
@@ -90,9 +90,9 @@
 
 	if (istype(W, /obj/item/flamethrower))
 		var/obj/item/flamethrower/F = W
-		if ((!F.secured)||(F.ptank))	return
+		if ((!F.secured)||(F.gas_tank))	return
 		src.master = F
-		F.ptank = src
+		F.gas_tank = src
 		user.remove_from_mob(src)
 		src.forceMove(F)
 	return
diff --git a/code/game/objects/items/weapons/tools.dm b/code/game/objects/items/weapons/tools.dm
index 5dd1f8c3791..f28fcb6e41f 100644
--- a/code/game/objects/items/weapons/tools.dm
+++ b/code/game/objects/items/weapons/tools.dm
@@ -82,6 +82,13 @@
 		tf.Translate(-3,0) //Could do this with pixel_x but let's just update the appearance once.
 	transform = tf
 
+/obj/item/screwdriver/get_belt_overlay()
+	var/mutable_appearance/body = mutable_appearance('icons/obj/clothing/belt_overlays.dmi', "screwdriver")
+	var/mutable_appearance/head = mutable_appearance('icons/obj/clothing/belt_overlays.dmi', "screwdriver_head")
+	body.color = color
+	head.add_overlay(body)
+	return head
+
 /obj/item/screwdriver/pickup(mob/user)
 	..()
 	update_icon()
@@ -150,6 +157,13 @@
 		tf.Translate(-1,0) //Could do this with pixel_x but let's just update the appearance once.
 	transform = tf
 
+/obj/item/wirecutters/get_belt_overlay()
+	var/mutable_appearance/body = mutable_appearance('icons/obj/clothing/belt_overlays.dmi', "wirecutters")
+	var/mutable_appearance/head = mutable_appearance('icons/obj/clothing/belt_overlays.dmi', "wirecutters_head")
+	body.color = color
+	head.add_overlay(body)
+	return head
+
 /obj/item/wirecutters/pickup(mob/user)
 	..()
 	update_icon()
@@ -191,20 +205,15 @@
 /obj/item/weldingtool
 	name = "welding tool"
 	desc = "A welding tool with a built-in fuel tank, designed for welding and cutting metal."
-	icon = 'icons/obj/tools.dmi'
-	item_icons = list(
-		slot_l_hand_str = 'icons/mob/items/lefthand_tools.dmi',
-		slot_r_hand_str = 'icons/mob/items/righthand_tools.dmi',
-		)
-	icon_state = "welder_off"
-	item_state = "welder_off"
+	icon = 'icons/obj/contained_items/tools/welding_tools.dmi'
+	icon_state = "welder"
+	item_state = "welder"
+	contained_sprite = TRUE
 	flags = CONDUCT
 	slot_flags = SLOT_BELT
 	drop_sound = 'sound/items/drop/weldingtool.ogg'
 	pickup_sound = 'sound/items/pickup/weldingtool.ogg'
 	usesound = 'sound/items/welder.ogg'
-	var/base_iconstate = "welder"//These are given an _on/_off suffix before being used
-	var/base_itemstate = "welder"
 
 	//Amount of OUCH when it's thrown
 	force = 3
@@ -224,14 +233,16 @@
 	var/status = 1 		//Whether the welder is secured or unsecured (able to attach rods to it to make a flamethrower)
 	var/max_fuel = 20 	//The max amount of fuel the welder can hold
 
+	var/change_icons = TRUE
+
 /obj/item/weldingtool/iswelder()
 	return TRUE
 
 /obj/item/weldingtool/largetank
 	name = "industrial welding tool"
 	desc = "A welding tool with an extended-capacity built-in fuel tank, standard issue for engineers."
-	base_iconstate = "ind_welder"
-	base_itemstate = "ind_welder"
+	icon_state = "indwelder"
+	item_state = "welder"
 	max_fuel = 40
 	matter = list(DEFAULT_WALL_MATERIAL = 100, MATERIAL_GLASS = 60)
 	origin_tech = list(TECH_ENGINEERING = 2)
@@ -239,8 +250,8 @@
 /obj/item/weldingtool/hugetank
 	name = "advanced welding tool"
 	desc = "A rare and powerful welding tool with a super-extended fuel tank."
-	base_iconstate = "adv_welder"
-	base_itemstate = "adv_welder"
+	icon_state = "advwelder"
+	item_state = "advwelder"
 	max_fuel = 80
 	matter = list(DEFAULT_WALL_MATERIAL = 200, MATERIAL_GLASS = 120)
 	origin_tech = list(TECH_ENGINEERING = 3)
@@ -249,16 +260,16 @@
 /obj/item/weldingtool/experimental
 	name = "experimental welding tool"
 	desc = "A scientifically-enhanced welding tool that uses fuel-producing microbes to gradually replenish its fuel supply."
-	base_iconstate = "exp_welder"
-	base_itemstate = "exp_welder"
+	icon_state = "expwelder"
+	item_state = "expwelder"
 	max_fuel = 40
 	matter = list(DEFAULT_WALL_MATERIAL = 100, MATERIAL_GLASS = 120)
 	origin_tech = list(TECH_ENGINEERING = 4, TECH_BIO = 4)
 
-
 	var/last_gen = 0
 	var/fuelgen_delay = 400 //The time, in deciseconds, required to regenerate one unit of fuel
 	//400 = 1 unit per 40 seconds
+	change_icons = FALSE
 
 //Welding tool functionality here
 /obj/item/weldingtool/Initialize()
@@ -270,17 +281,27 @@
 	R.add_reagent(/decl/reagent/fuel, max_fuel)
 	update_icon()
 
-/obj/item/weldingtool/update_icon()
-	..()
-	var/add = welding ? "_on" : "_off"
-	icon_state = base_iconstate + add //These are given an _on/_off suffix before being used
-	item_state = base_itemstate + add
+/obj/item/weldingtool/proc/update_torch()
+	if(welding)
+		add_overlay("[initial(icon_state)]-on")
+		item_state = "[initial(item_state)]1"
+	else
+		item_state = "[initial(item_state)]"
+
 	if(welding == 2)
 		set_light(0.7, 2, l_color = LIGHT_COLOR_CYAN)
 	else if (welding == 1)
 		set_light(0.6, 1.5, l_color = LIGHT_COLOR_LAVA)
 	else
 		set_light(0)
+
+/obj/item/weldingtool/update_icon()
+	cut_overlays()
+	if(change_icons)
+		var/ratio = get_fuel() / max_fuel
+		ratio = CEILING(ratio*4, 1) * 25
+		add_overlay("[initial(icon_state)][ratio]")
+	update_torch()
 	var/mob/M = loc
 	if(istype(M))
 		M.update_inv_l_hand()
@@ -712,13 +733,10 @@
 /obj/item/powerdrill
 	name = "impact wrench"
 	desc = "The screwdriver's big brother."
-	icon = 'icons/obj/tools.dmi'
-	item_icons = list(
-		slot_l_hand_str = 'icons/mob/items/lefthand_tools.dmi',
-		slot_r_hand_str = 'icons/mob/items/righthand_tools.dmi',
-		)
-	icon_state = "powerdrillyellow"
-	item_state = "powerdrillyellow"
+	icon = 'icons/obj/contained_items/tools/impact_wrench.dmi'
+	icon_state = "impact_wrench-screw"
+	item_state = "impact_wrench"
+	contained_sprite = TRUE
 	force = 8
 	attack_verb = list("gored", "drilled", "screwed", "punctured")
 	w_class = ITEMSIZE_SMALL
@@ -730,12 +748,8 @@
 		"wrenchbit"
 		)
 
-
 /obj/item/powerdrill/Initialize()
 	. = ..()
-	var/drillcolor = pick("red", "blue", "yellow", "green")
-	icon_state = "powerdrill[drillcolor]"
-	item_state = icon_state
 	update_tool()
 
 /obj/item/powerdrill/examine(var/mob/user)
@@ -763,13 +777,12 @@
 	return tools[current_tool] == "screwdriverbit"
 
 /obj/item/powerdrill/proc/update_tool()
-	cut_overlays()
 	if(isscrewdriver())
 		usesound = 'sound/items/air_wrench.ogg'
-		add_overlay("screwdriverbit")
+		icon_state = "impact_wrench-screw"
 	else if(iswrench())
 		usesound = 'sound/items/drill_use.ogg'
-		add_overlay("wrenchbit")
+		icon_state = "impact_wrench-wrench"
 
 /obj/item/powerdrill/attack_self(var/mob/user)
 	if(++current_tool > tools.len)
diff --git a/code/modules/integrated_electronics/core/tools.dm b/code/modules/integrated_electronics/core/tools.dm
index 5052ea23b50..cf8e710f2d6 100644
--- a/code/modules/integrated_electronics/core/tools.dm
+++ b/code/modules/integrated_electronics/core/tools.dm
@@ -165,75 +165,6 @@
 
 	io.holder.interact(user) // This is to update the UI.
 
-/obj/item/device/multitool
-	var/datum/integrated_io/selected_io = null
-	var/mode = 0
-
-/obj/item/device/multitool/attack_self(mob/user)
-	if(selected_io)
-		selected_io = null
-		to_chat(user, "<span class='notice'>You clear the wired connection from the multitool.</span>")
-	else
-		..()
-	update_icon()
-
-/obj/item/device/multitool/update_icon()
-	if(selected_io)
-		if(buffer || connecting || buffer_object)
-			icon_state = "multitool_tracking"
-		else
-			icon_state = "multitool_red"
-	else
-		if(buffer || connecting || buffer_object)
-			icon_state = "multitool_tracking_fail"
-		else
-			icon_state = "multitool"
-
-/obj/item/device/multitool/proc/wire(datum/integrated_io/io, mob/user)
-	if(!io.holder.assembly)
-		to_chat(user, "<span class='warning'>\The [io.holder] needs to be secured inside an assembly first.</span>")
-		return
-
-	if(selected_io)
-		if(io == selected_io)
-			to_chat(user, "<span class='warning'>Wiring \the [selected_io.holder]'s '[selected_io.name]' pin into itself is rather pointless.</span>")
-			return
-		if(io.io_type != selected_io.io_type)
-			to_chat(user, "<span class='warning'>Those two types of channels are incompatable.  The first is a [selected_io.io_type], \
-			while the second is a [io.io_type].</span>")
-			return
-		if(io.holder.assembly && io.holder.assembly != selected_io.holder.assembly)
-			to_chat(user, "<span class='warning'>Both \the [io.holder] and \the [selected_io.holder] need to be inside the same assembly.</span>")
-			return
-		selected_io.linked |= io
-		io.linked |= selected_io
-
-		to_chat(user, "<span class='notice'>You connect \the [selected_io.holder]'s '[selected_io.name]' pin to \the [io.holder]'s '[io.name]' pin.</span>")
-		selected_io.holder.interact(user) // This is to update the UI.
-		selected_io = null
-
-	else
-		selected_io = io
-		to_chat(user, "<span class='notice'>You link \the multitool to \the [selected_io.holder]'s [selected_io.name] data channel.</span>")
-
-	update_icon()
-
-/obj/item/device/multitool/proc/unwire(datum/integrated_io/io1, datum/integrated_io/io2, mob/user)
-	if(!io1.linked.len || !io2.linked.len)
-		to_chat(user, "<span class='warning'>There is nothing connected to the data channel.</span>")
-		return
-
-	if(!(io1 in io2.linked) || !(io2 in io1.linked) )
-		to_chat(user, "<span class='warning'>These data pins aren't connected!</span>")
-		return
-	else
-		io1.linked.Remove(io2)
-		io2.linked.Remove(io1)
-		to_chat(user, "<span class='notice'>You clip the data connection between the [io1.holder.displayed_name]'s \
-		'[io1.name]' pin and the [io2.holder.displayed_name]'s '[io2.name]' pin.</span>")
-		io1.holder.interact(user) // This is to update the UI.
-		update_icon()
-
 /obj/item/device/integrated_electronics/detailer
 	name = "assembly detailer"
 	desc = "A combination autopainter and flash anodizer designed to give electronic assemblies a colorful, wear-resistant finish."
diff --git a/code/modules/mob/living/silicon/robot/items/robot_tools.dm b/code/modules/mob/living/silicon/robot/items/robot_tools.dm
index 1e16bb53e9e..5b98876e99b 100644
--- a/code/modules/mob/living/silicon/robot/items/robot_tools.dm
+++ b/code/modules/mob/living/silicon/robot/items/robot_tools.dm
@@ -19,6 +19,7 @@
 
 /obj/item/weldingtool/robotic
 	icon = 'icons/obj/robot_items.dmi'
+	change_icons = FALSE
 
 /obj/item/soap/drone
 	name = "integrated soap"
diff --git a/html/changelogs/geeves-tool_resprite.yml b/html/changelogs/geeves-tool_resprite.yml
new file mode 100644
index 00000000000..294adfac249
--- /dev/null
+++ b/html/changelogs/geeves-tool_resprite.yml
@@ -0,0 +1,6 @@
+author: Geeves
+
+delete-after: True
+
+changes:
+  - imageadd: "Ported and tweaked sprites for: Toolbelts, Belt Overlays, Welding Tools, Impact Wrench, Air Analyzer, T-ray Scanner, Flamethrower, Multitool."
\ No newline at end of file
diff --git a/icons/mob/belt.dmi b/icons/mob/belt.dmi
index 5469d7a1ea9..bf528a4c08f 100644
Binary files a/icons/mob/belt.dmi and b/icons/mob/belt.dmi differ
diff --git a/icons/mob/items/device/lefthand_device.dmi b/icons/mob/items/device/lefthand_device.dmi
index 9a35b91b9bd..6707f167379 100644
Binary files a/icons/mob/items/device/lefthand_device.dmi and b/icons/mob/items/device/lefthand_device.dmi differ
diff --git a/icons/mob/items/device/righthand_device.dmi b/icons/mob/items/device/righthand_device.dmi
index a9acc63d088..087752b205d 100644
Binary files a/icons/mob/items/device/righthand_device.dmi and b/icons/mob/items/device/righthand_device.dmi differ
diff --git a/icons/mob/items/lefthand.dmi b/icons/mob/items/lefthand.dmi
index be996b6356f..0037616a661 100644
Binary files a/icons/mob/items/lefthand.dmi and b/icons/mob/items/lefthand.dmi differ
diff --git a/icons/mob/items/lefthand_tools.dmi b/icons/mob/items/lefthand_tools.dmi
index 04e670c462d..0efbc63e443 100644
Binary files a/icons/mob/items/lefthand_tools.dmi and b/icons/mob/items/lefthand_tools.dmi differ
diff --git a/icons/mob/items/righthand.dmi b/icons/mob/items/righthand.dmi
index 6a4d877635e..4622c6acc04 100644
Binary files a/icons/mob/items/righthand.dmi and b/icons/mob/items/righthand.dmi differ
diff --git a/icons/mob/items/righthand_tools.dmi b/icons/mob/items/righthand_tools.dmi
index b083665204e..037f1cc49c0 100644
Binary files a/icons/mob/items/righthand_tools.dmi and b/icons/mob/items/righthand_tools.dmi differ
diff --git a/icons/obj/clothing/belt_overlays.dmi b/icons/obj/clothing/belt_overlays.dmi
new file mode 100644
index 00000000000..11da3958454
Binary files /dev/null and b/icons/obj/clothing/belt_overlays.dmi differ
diff --git a/icons/obj/clothing/belts.dmi b/icons/obj/clothing/belts.dmi
index 54894f14c13..f915affe1e5 100644
Binary files a/icons/obj/clothing/belts.dmi and b/icons/obj/clothing/belts.dmi differ
diff --git a/icons/obj/contained_items/tools/air_analyzer.dmi b/icons/obj/contained_items/tools/air_analyzer.dmi
new file mode 100644
index 00000000000..847c696185b
Binary files /dev/null and b/icons/obj/contained_items/tools/air_analyzer.dmi differ
diff --git a/icons/obj/contained_items/tools/impact_wrench.dmi b/icons/obj/contained_items/tools/impact_wrench.dmi
new file mode 100644
index 00000000000..425220a4b87
Binary files /dev/null and b/icons/obj/contained_items/tools/impact_wrench.dmi differ
diff --git a/icons/obj/contained_items/tools/multitool.dmi b/icons/obj/contained_items/tools/multitool.dmi
new file mode 100644
index 00000000000..6ca232e2765
Binary files /dev/null and b/icons/obj/contained_items/tools/multitool.dmi differ
diff --git a/icons/obj/contained_items/tools/t_scanner.dmi b/icons/obj/contained_items/tools/t_scanner.dmi
new file mode 100644
index 00000000000..96d995f9093
Binary files /dev/null and b/icons/obj/contained_items/tools/t_scanner.dmi differ
diff --git a/icons/obj/contained_items/tools/welding_tools.dmi b/icons/obj/contained_items/tools/welding_tools.dmi
new file mode 100644
index 00000000000..3ef86e6dd62
Binary files /dev/null and b/icons/obj/contained_items/tools/welding_tools.dmi differ
diff --git a/icons/obj/contained_items/weapons/flamethrower.dmi b/icons/obj/contained_items/weapons/flamethrower.dmi
new file mode 100644
index 00000000000..d13ec20ea0d
Binary files /dev/null and b/icons/obj/contained_items/weapons/flamethrower.dmi differ
diff --git a/icons/obj/device.dmi b/icons/obj/device.dmi
index a8b889111fd..2abf454ab8b 100644
Binary files a/icons/obj/device.dmi and b/icons/obj/device.dmi differ
diff --git a/icons/obj/flamethrower.dmi b/icons/obj/flamethrower.dmi
deleted file mode 100644
index dd470c47809..00000000000
Binary files a/icons/obj/flamethrower.dmi and /dev/null differ
diff --git a/icons/obj/robot_items.dmi b/icons/obj/robot_items.dmi
index 8a495202f7f..b6fe254e02e 100644
Binary files a/icons/obj/robot_items.dmi and b/icons/obj/robot_items.dmi differ
diff --git a/icons/obj/tools.dmi b/icons/obj/tools.dmi
index af6a6fef257..8f89da9e2a6 100644
Binary files a/icons/obj/tools.dmi and b/icons/obj/tools.dmi differ