Simple and Cool. 223 caliber, brass shell, copper FMJ tip, hung on a 1" nickel plated split key ring. These are actual real bullet keychain. The inert shells are completly safe and harmless and cannot be fired in any fire arm. These are the real deal simply with the gun powder removed. No Plastic, No BS just real bullets turned into cool novelties! The brass casing it cleaned and polished as well as the Full metal Jacket Copper 223 Caliber Tip.