The Master Lock No. 620D Set Your Own Combination Padlock features a 13/16 in (20mm) wide solid metal body for durability. The 1/8 in (3mm) diameter shackle is 7/8 in (22mm) long and made of nickel plated steel, offering resistance to cutting and sawing. The 3 dial combination security offers keyless convenience. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.