Stainless steel body cover and top and bottom plates for exceptional weatherability. 2in (51mm) wide laminated steel body for superior durability. 1in (25mm) octagonal boron carbide shackle is 50% harder than hardened steel. Chrome-plated shackle for excellent rust resistance. Superior pry resistance with dual-ball bearing locking. Can be keyed into existing K1 or WP4 Edge® keyways.