Product Description The Master Lock No. 1D Laminated Padlock features a 1-3/4in (44mm) wide laminated steel body for maximum strength and reliability. The 5/16in (8mm) diameter shackle is 15/16in (24mm) long and made of hardened steel, offering extra resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking ball bearings provide resistance against prying and hammering. The Limited Lifetime Warranty provides peace of mind from a brand you can trust. From the Manufacturer The Master Lock Laminated Steel Pin Tumbler Padlock features a 1-3/4 inches wide laminated steel body for superior strength. The four-pin cylinder helps prevent picking and dual locking levers provide extra pry resistance. A hardened steel shackle guarantees extra cut resistance. More than 3000 key changes allow for maximum pick resistance. Master Lock offers a full line of padlocks, chains, cables, and specialty locks for all of your needs.