The Master Lock M530XQLH Heavy Duty Outdoor Padlock with Key, Four Pack, features a 1-3/4 in. (44 mm.) wide solid steel body for maximum strength and reliability. Octagonal lock shackle is 2 in. (51 mm.) long and made of tough-cut boron-carbide, 50% harder than hardened steel, offering maximum resistance from cutting and sawing. Lock five-pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance against prying and hammering. Padlock covered keyway offers maximum weather protection, and reinforced body bumper protects against scratches. Master Lock's Lifetime Guarantee provides peace of mind from a brand you can trust. Color: Silver.