Master Lock 3D Laminated Padlock, 3/4-inch Shackle, 1-9/16-inch Wide 1-1/2" Wide laminated case 4-Pin tumbler security Dual Steel levers lock both sides of case-hardened, 9/32" Diameter steel shackle Hardened steel shackle for extra cut resistance 4-pin cylinder helps prevent picking Dual locking levers provide extra pry resistance Thousands of key changes maximize key integrity Proprietary rustproofing for longer life