Now you can have all of the protection you need conveniently carried on your keychain! This single-hole knuckle accessory is made from high quality Damascus Steel, and comes complete with a drilled hole to add onto your keys. Never feel unsafe again with defense as close by as this keychain accessory that packs a whollop! Overall Length: 2.3 inches, Overall Width: 1.6 inches, Finger Hole Size: 1.25 inches