Weather Tough Solid Brass Padlocks, 1/4 in Diam., 1 1/16 in L X 25/32 in WHardened steel shackle for extra cut resistanceDual deadbolt locking for resistance to pryingCorrosion resistant body for caustic, corrosive and salty EnvironmentsProvide tens of thousands of key changesRekeyable for ease of replacing cylinder or shackle