Master Lock Pro Series Rekeyable Padlock - Keyed Different - 0.31" Shackle Diameter - Cut Resistant, Pry Resistant, Weather Resistant - Steel - Black - 1 Each - Rekeyable padlock is designed to hold up against harsh outdoor conditions. Pro Series Weather Tough Cover protects the lock from water, ice, dirt and grime. Padlock is designed for commercial and industrial applications. Heavy steel body is capable of withstanding physical attacks. Hardened boron alloy shackle provides maximum cut-resistance. Dual ball locking mechanism resists pulling and prying. High-security, rekeyable, five-pin cylinder with spool pins is virtually impossible to pick. Padlock is great for use with truck doors, trailers, vans, moving trucks, manufacturing environments and more.