Product Description The Master Lock 1TRILJ Laminated Padlocks feature a 1-3/4 in. (44 mm.) wide laminated steel body for maximum strength and reliability. The 5/16 in. (8 mm.) diameter shackle is 2 in. (51 mm.) long and made of hardened steel, offering extra resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual ball bearing locking mechanism provides maximum pick and pry resistance. The Lifetime Guarantee provides peace of mind from a brand you know and can trust. From the Manufacturer Master Lock 1TRILJ 3-Pack of 1-3/4" (44mm) Wide Laminated Locks with 2-1/2" (64mm) Shackle - all keyed alike