Black Skull Spiked Keychain - Self Defense Skull Knuckles - Black

Brass knuckles for defense - Wicked Store

Red Skull Knuckle Duster - Black and Red Brass Knuckles - Fist Loading Weapons

Red Skull Knuckle Duster - Red Steel Brass Knuckles - Red Splatter Knuckles

Skull Self Defense Keychain - J&L Self Defense Products

Brutus Self Defense Tactical Keychain – Guardian Self Defense

Public Safety Survival Knuckle Keychain Skull Head 'S' – Panther Wholesale

Vampire Skull Self Defense Keychain Knuckle – South Summit

Ninja Spike Keychain - Self Defense Weapon - Spiked Kubotan key chain

Brass knuckles for defense - Wicked Store

Self-Defense Knuckle Ring

Lux Accessories Black Hem Gothic Skull Tools Full Hand Skeleton Bracelet Rings: Clothing, Shoes & Jewelry