The Master Lock No. 576DLHPF Solid Body Padlock features a 1-3/4in (44mm) wide solid brass lock body that is strong, durable and resists corrosion. The 5/16in (8mm) diameter shackle is 2in (51mm) long and made of hardened steel, offering extra resistance to cutting and sawing. The 5-pin cylinder prevents picking and the dual locking ball bearings provide maximum protection against prying and hammering. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.