Vestil Positive Lock Plate Clamps - 4,000-Lb. Capacity

Grips sheet until release ring is pulled. Serrated gripper constructed of hardened steel. Forged head and gear. Safety factor is 2 to 1. Durable powder-coated finish. Designed to meet ASME B30.20 standards. Not designed for use on stainless steel or aluminum plates. For use with materials with a surface hardness to 30 RC (300 HB).