The Master Lock No. 647D Set Your Own Combination Padlock features a 1-3/16in (30mm) wide metal body for durability. The 3/16in (5mm) diameter shackle is 7/8in (22mm) long and made of 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.