The Master Lock No. 643DWD Set Your Own WORD Combination Padlock features a 1-9/16 inch (40mm) wide metal body for durability. nThe 1/4 inch (6mm) diameter shackle is 7/8 inch (22mm) long and made of nickel plated steel, offering resistance to cutting and sawing. nThe 4 dial combination security offers keyless convenience. nThe limited lifetime warranty provides peace of mind from a brand you can trust.