diff --git a/code/datums/components/crafting/guncrafting.dm b/code/datums/components/crafting/guncrafting.dm
index 0a42b2edd84..f239288b031 100644
--- a/code/datums/components/crafting/guncrafting.dm
+++ b/code/datums/components/crafting/guncrafting.dm
@@ -16,6 +16,12 @@
 	icon = 'icons/obj/weapons/improvised.dmi'
 	icon_state = "riflestock"
 
+/obj/item/weaponcrafting/giant_wrench
+	name = "Big Slappy parts kit"
+	desc = "Illegal parts to make a giant like wrench commonly known as a Big Slappy."
+	icon = 'icons/obj/weapons/improvised.dmi'
+	icon_state = "weaponkit_gw"
+
 ///These gun kits are printed from the security protolathe to then be used in making new weapons
 
 // GUN PART KIT //
diff --git a/code/datums/components/crafting/melee_weapon.dm b/code/datums/components/crafting/melee_weapon.dm
index 0d50bf077e6..23873a5d7af 100644
--- a/code/datums/components/crafting/melee_weapon.dm
+++ b/code/datums/components/crafting/melee_weapon.dm
@@ -142,3 +142,17 @@
 	)
 	time = 10 SECONDS
 	category = CAT_WEAPON_MELEE
+
+/datum/crafting_recipe/giant_wrench
+	name = "Big Slappy"
+	result = /obj/item/shovel/giant_wrench
+	tool_behaviors = list(TOOL_CROWBAR, TOOL_SCREWDRIVER, TOOL_WELDER)
+	reqs = list(
+		/obj/item/wrench = 4,
+		/obj/item/weaponcrafting/giant_wrench = 1,
+		/obj/item/stack/sheet/plasteel = 5,
+		/obj/item/stack/rods = 10,
+		/obj/item/pickaxe/drill = 1,
+	)
+	time = 10 SECONDS
+	category = CAT_WEAPON_MELEE
diff --git a/code/modules/cargo/markets/market_items/misc.dm b/code/modules/cargo/markets/market_items/misc.dm
index 937bbc33232..d2b70704e7a 100644
--- a/code/modules/cargo/markets/market_items/misc.dm
+++ b/code/modules/cargo/markets/market_items/misc.dm
@@ -121,3 +121,12 @@
 	stock_min = 3
 	stock_max = 8
 	availability_prob = 90
+
+/datum/market_item/misc/giant_wrench_parts
+	name = "Big Slappy parts"
+	desc = "Cheap illegal Big Slappy parts. The fastest and statistically most dangerous wrench."
+	item = /obj/item/weaponcrafting/giant_wrench
+	price_min = CARGO_CRATE_VALUE * 2
+	price_max = CARGO_CRATE_VALUE * 5
+	stock_max = 1
+	availability_prob = 25
diff --git a/code/modules/cargo/packs/imports.dm b/code/modules/cargo/packs/imports.dm
index a1f721180d3..2b46a0f34d4 100644
--- a/code/modules/cargo/packs/imports.dm
+++ b/code/modules/cargo/packs/imports.dm
@@ -291,3 +291,11 @@
 	cost = CARGO_CRATE_VALUE * 5
 	contains = list(/obj/item/reagent_containers/cup/glass/bottle/juice/dreadnog = 3)
 	crate_name = "dreadnog crate"
+
+/datum/supply_pack/imports/giant_wrench_parts
+	name = "Big Slappy parts"
+	desc = "Illegal Big Slappy parts. The fastest and statistically most dangerous wrench."
+	cost = CARGO_CRATE_VALUE * 22
+	contraband = TRUE
+	contains = list(/obj/item/weaponcrafting/giant_wrench)
+	crate_name = "unknown parts crate"
diff --git a/code/modules/mining/equipment/mining_tools.dm b/code/modules/mining/equipment/mining_tools.dm
index 101ad3cb20a..b931e67f058 100644
--- a/code/modules/mining/equipment/mining_tools.dm
+++ b/code/modules/mining/equipment/mining_tools.dm
@@ -283,3 +283,90 @@
 	if(user.incapacitated() || !user.Adjacent(src))
 		return FALSE
 	return TRUE
+
+/obj/item/shovel/giant_wrench
+	name = "Big Slappy"
+	desc = "A gigantic wrench made illegal because of its many incidents involving this tool."
+	icon_state = "giant_wrench"
+	icon = 'icons/obj/weapons/giant_wrench.dmi'
+	inhand_icon_state = null
+	lefthand_file = 'icons/mob/inhands/64x64_lefthand.dmi'
+	righthand_file = 'icons/mob/inhands/64x64_righthand.dmi'
+	inhand_x_dimension = 64
+	inhand_y_dimension = 64
+	w_class = WEIGHT_CLASS_HUGE
+	slot_flags = NONE
+	toolspeed = 0.1
+	force = 30
+	throwforce = 20
+	block_chance = 30
+	throw_range = 2
+	demolition_mod = 2
+	armor_type = /datum/armor/giant_wrench
+	resistance_flags = FIRE_PROOF
+	wound_bonus = -10
+	attack_verb_continuous = list("bonks", "bludgeons", "pounds")
+	attack_verb_simple = list("bonk", "bludgeon", "pound")
+	drop_sound = 'sound/weapons/sonic_jackhammer.ogg'
+	pickup_sound = 'sound/items/handling/crowbar_pickup.ogg'
+	hitsound = 'sound/weapons/sonic_jackhammer.ogg'
+	block_sound = 'sound/weapons/sonic_jackhammer.ogg'
+	item_flags = SLOWS_WHILE_IN_HAND
+	slowdown = 3
+	attack_speed = 1.2 SECONDS
+	/// The factor at which the recoil becomes less.
+	var/recoil_factor = 3
+	/// Wether we knock down and launch away out enemies when we attack.
+	var/do_launch = TRUE
+
+/datum/armor/giant_wrench
+	acid = 30
+	bomb = 100
+	bullet = 30
+	fire = 100
+	laser = 30
+	melee = 30
+
+/obj/item/shovel/giant_wrench/Initialize(mapload)
+	. = ..()
+	transform = transform.Translate(-16, -16)
+	AddComponent(/datum/component/two_handed, require_twohands=TRUE)
+	AddComponent( \
+		/datum/component/transforming, \
+		force_on = 40, \
+		throwforce_on = throwforce, \
+		hitsound_on = hitsound, \
+		w_class_on = w_class, \
+		sharpness_on = SHARP_POINTY, \
+		clumsy_check = TRUE, \
+		inhand_icon_change = TRUE, \
+	)
+	RegisterSignal(src, COMSIG_TRANSFORMING_ON_TRANSFORM, PROC_REF(on_transform))
+
+/// Used when the tool is transformed through the transforming component.
+/obj/item/shovel/giant_wrench/proc/on_transform(obj/item/source, mob/user, active)
+	SIGNAL_HANDLER
+
+	usesound = (active ? 'sound/items/ratchet.ogg' : initial(usesound))
+	block_chance = (active ? 0 : initial(block_chance))
+	recoil_factor = (active ? 2 : initial(recoil_factor))
+	do_launch = (active ? FALSE : initial(do_launch))
+	tool_behaviour = (active ? TOOL_WRENCH : initial(tool_behaviour))
+	armour_penetration = (active ? 30 : initial(armour_penetration))
+	if(user)
+		balloon_alert(user, "folded Big Slappy [active ? "open" : "closed"]")
+	playsound(src, 'sound/items/ratchet.ogg', 50, TRUE)
+	return COMPONENT_NO_DEFAULT_MESSAGE
+
+/obj/item/shovel/giant_wrench/attack(mob/living/target_mob, mob/living/user)
+	..()
+	if(QDELETED(target_mob))
+		return
+	if(do_launch)
+		var/atom/throw_target = get_edge_target_turf(target_mob, get_dir(user, get_step_away(target_mob, user)))
+		target_mob.throw_at(throw_target, 2, 2, user, gentle = TRUE)
+		target_mob.Knockdown(2 SECONDS)
+	var/body_zone = pick(BODY_ZONE_HEAD, BODY_ZONE_CHEST, BODY_ZONE_R_ARM, BODY_ZONE_L_ARM, BODY_ZONE_R_LEG, BODY_ZONE_L_LEG)
+	user.apply_damage(force / recoil_factor, BRUTE, body_zone, user.run_armor_check(body_zone, MELEE))
+	to_chat(user, span_danger("The weight of the Big Slappy recoils!"))
+	log_combat(user, user, "recoiled Big Slappy into")
diff --git a/icons/mob/inhands/64x64_lefthand.dmi b/icons/mob/inhands/64x64_lefthand.dmi
index 4a43893cef4..26c177f7293 100644
Binary files a/icons/mob/inhands/64x64_lefthand.dmi and b/icons/mob/inhands/64x64_lefthand.dmi differ
diff --git a/icons/mob/inhands/64x64_righthand.dmi b/icons/mob/inhands/64x64_righthand.dmi
index 89975e330ce..79c30f5cb19 100644
Binary files a/icons/mob/inhands/64x64_righthand.dmi and b/icons/mob/inhands/64x64_righthand.dmi differ
diff --git a/icons/obj/weapons/giant_wrench.dmi b/icons/obj/weapons/giant_wrench.dmi
new file mode 100644
index 00000000000..b9aef713d6a
Binary files /dev/null and b/icons/obj/weapons/giant_wrench.dmi differ
diff --git a/icons/obj/weapons/improvised.dmi b/icons/obj/weapons/improvised.dmi
index b2ef58f7088..a98d5cad860 100644
Binary files a/icons/obj/weapons/improvised.dmi and b/icons/obj/weapons/improvised.dmi differ