The Master Lock 1530DCM X-Treme Colour Combination Lock features a 1-7/8in (48mm) wide metal body for durability, with an anodized aluminum finish. The 9/32in (7mm) diameter shackle is 3/4in (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 metallic colors simplify locker identification. Available in blue, red and or purple (colour randomly selected at time of shipment). The Limited Lifetime Warranty provides peace of mind from a brand you can trust.