The Master Lock M40XT Heavy Duty Outdoor Shrouded Padlock with Key, Two Pack, features a 2-3/4 in. (70 mm.) wide stainless steel body for maximum strength, reliability and corrosion resistance. Padlock is fully shrouded and minimizes shackle exposure and protects against bolt cutter attacks. Octagonal lock shackle is 3/8 in. (10 mm.) in diameter and is 5/8 in. (16 mm.) long and made of Tough-Cut boron-carbide, 50% harder than hardened steel, offering maximum resistance from cutting and sawing. Keyed lock four-pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance against prying and hammering. Covered lock 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.