Hardened and tempered drop-forged Chrome Vanadium steel with recessed panel and satin finish. Specially designed for use with slotted retaining rings. Hook and pin interchangeable hinged arms. Features: Hardened and tempered drop-forged Chrome Vanadium steel with recessed panel and satin finish Specially designed for use with slotted retaining rings Hook and pin interchangeable hinged arms covering sizes 51-121mm Pin Sizes: Ø6, 8mm Specifications: Guarantee:1 Year Model Number: SMC2L