Rugged modern security hasps that match the superior construction of Master Lock® padlocks, and patented design. Heavy hard-wrought steel ribbed for maximum strength. Tapered design with rolled edges to conceal screws and prevent prying. Exclusive pinless hinge for added security. Cadmium rust-proofing, Extra-strong rounded staple of hardened steel complete with 7 screws, 4-1/2" hasp, 1/2" shackle diameter.