The Master Lock 1535D Combination Locker Lock with Resettable Combination features a 1-1/2 in. (40 mm.) wide metal body for strength and durability. Lock shackle is 1/4 in. (6 mm.) in diameter and is 15/16 in. (23 mm.) long and made of hardened steel, offering extra resistance from cutting and sawing. Padlock dial grip points provide accurate dialing and keyless convenience. Master Lock's Lifetime Guarantee provides peace of mind from a brand you can trust.