The Master Lock No. 1506D Standard Dial Combination Padlock features a 1-7/8 in. (48mm) wide metal body for durability, with a stainless steel cover. The 9/32 in. (7mm) diameter shackle is 3/4 in. (19mm) long and made of hardened steel, offering extra resistance to cutting and sawing. The 3-digit combination offers keyless convenience. The locking mechanism features anti-shim technology, offering maximum security. The bright blue dial color simplifies locker identification.