Product Description The Master Lock Excell® No. M175EURDLH Solid Body Padlock features a 56mm wide zinc body for strength and reliability. The 9mm diameter octagonal shackle is 51mm long and made of Tough-Cut™ boron-carbide, 50% harder than hardened steel, offering maximum resistance to cutting and sawing. The roller pin cylinder provides maximum pick and pry resistance. The hinged dial cover and shackle seal offers superior weather protection, and reinforced body bumper protects against scratches. The lock includes Set-Your-Own combination convenience, without the need for a reset tool. This padlock is perfect for an outdoor use : self storage units, sheds, trailers, moving trucks, vans and more. The Limited Lifetime Warranty provides peace of mind from a brand you can trust. MULTIPLE PADLOCK APPLICATIONS: For indoor and outdoor use; zinc body padlock is best used for self storage units, sheds, trailers, moving trucks, vans and more. EASE OF USE: large ergonomic dials with exclusive blind dial feature permit operation with gloves, in low light or complete darkness. DURABLE DESIGN: the hinged dial cover and shackle seal offers superior weather protection, and reinforced body bumper protects against scratches. HIGH SECURITY COMBINATION: Set-your-own 4-digit combination for convenience and security; 10,000 possible combinations. HIGH SECURITY SHACKLE: Tough-Cut™ octagonal boron-carbide shackle that is 50% harder than hardened steel and Roller pin locking for maximum pick and pry resistance.