"Grips sheet until release ring is pulled. Serrated gripper constructed of hardened steel. Forged head and gear. Safety factor is 2 to 1. Durable blue paint 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. Throat Depth in. 2 5/16, Plate Thickness in. 13/16, Product Style Positive, Load Capacity lbs. 2,000, Bale Opening in. 1 7/8. Grips sheet until release ring is pulled Serrated gripper is constructed of hardened tool steel Forged head and gear Safety factor is 2 to 1 Power-coat finish Designed to meet ASME B30.20 standards Do not use plate clamps to lift loads less than 20 of rated capacity Lift only one plate at a time Plate must be clean and free of oil"