The Master Lock Excell M40EURDNUM Zinc Padlock features a 70mm wide stainless steel body for strength, reliability and corrosion resistance. The 10mm diameter octagonal shackle is 16mm long and made of Tough-Cut boron-carbide, 50 percent harder than hardened steel, offering maximum resistance to cutting and sawing. The reinforced body bumper protects against scratches. The lock includes Set-Your-Own combination as well as a reset tool.