The Master Lock No. 3D Laminated Padlock features a 1-9/16” (40 mm) wide laminated steel body for maximum strength and reliability. The 9/32” (7 mm) diameter shackle is 3/4" (19 mm) 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.