Cat Knuckle Keychain Weapon Black. This unusual Black Cat Defense keychain packs a mighty punch! The eyes of the cat become finger holes and the ears become spikes when clutched in the hand to create an excellent means of self-defense against an attacker. The black finished stainless steel charm includes a silver ring and clasp for attaching keys. This keychain looks non-threatening, is easy to carry, and will provide you with peace of mind! Size 3.14 X 1.96 inch