Bluemoona One Pcs - Hook Swivel Multi Removeable Detatchable Key Ring Keychain Clip Release Keyholder Accessories style B Size: snap hook + reel are 5" (128mm) total are approx 5 3/4" (keyring are 15mm or 5/8") Functional, high quality design,Key rings easily detach and then reattach to master unit Material:Metal color: Nickel Use for:keychain, key, school, home,Keyholder,office,garden, Card