Arborist-specific: A classic rope snap and USR made this snap with safety in mind. This ANSI certified snap hook is perfect for fall protection when you need it most. The Double Action Steel Double Lock Snap Hook is made from high tensile forged steel and a yellow / silver zinc plate finish. Features & Specs: MPN: USR-01-CFE Steel Double locking MBS: 23kN MPN: USR01CFE