"Quality padlocks from the worlds largest padlock manufacturer. All Master Lock padlocks are individually tested for strength and durability, and each offers a limited lifetime guarantee. Material Steel, Width in. 1 1/2, Finish Type Rustoleum finsih, Shackle Inside Dimensions H x W in. 5/8 x 9/16, Keys Included qty. 4, Includes qty. 4, Shackle Diameter in. mm 1/4. Rustoleum finish for lifetime rust protection Warded locking mechanism minimizes jamming from dirt and grime All 4 padlocks are keyed alike Limited lifetime warranty U.S.A."