Public Safety Aircraft-Grade Aluminum Keychain Kubotan Silver. Grip your kubotan and get to protecting yourself. A great public safety tool, the kubotan has been around for generations. Starting in Japan and originated by the man who trained their police, this is a non-lethal defense tool that looks harmless but packs a hard hit. Get yours now. •5.5 inch overall length •Bright color with mirror shine finish •Slightly elevated and thick tip/point - Ridges for a more secure grip •Aircraft-Grade Aluminum construction that hurts any potential attacker •Great impulse buy •Solid steel key ring