Master Lock 6321 2-1/8" Pro Series High Security Pad Lock Keyed Different (6pk) Shackle: 3/4". 2-1/8" wide laminated steel body for superior strength. Hardened boron alloy shackle for superior cut resistance. Solid iron shackle shroud resists harsh physical attacks. 5-spool pin tumbler cylinder for added pick resistance. Removable cylinder can be replaced or repinned. Dual ball bearing locking mechanism resists pulling and prying. 5 pin W6000 cylinder.
