American Lock A5100 Padlock 5100 Series Solid Steel Hardened chrome plated shackle 1/4" diameter Shackle clearance: 1", Removable brass cylinders for fast servicing Hardened steel cover plate for cylinder protection, Two brass keys included 5 pin tumbler security-AM3 keyway, Rekeyable for added security Double steel ball locking mechanism, Finish: Triple satin chrome