For use with Master Lock’s universal pin keying system. 1-9/16″ wide laminated case 4-pin tumbler security. Dual steel levers lock both sides of case-hardened 9/32″ diameter steel shackle. 5/8″ horizontal clearance. Universal pin padlocks are for use with Master Lock’s universal pin keying system. The system utilizes a mounted fixture or punch tool to shear the serrated pins to fit a customer’s existing padlock key. Padlocks do not include keys. The universal pin system will only work with Master Lock’s original key blank or the M1 blank. To order refer to , padlock rekeying tool.