CM Plate Clamp, ECH3KR35 6600 Lbs. Capacity, VerticalPlate Clamp, Operation Vertical Lift, Safe Working Load 6600 lb., Jaw Capacity 0 to 1-1/4 In., Locking Type Load Activated, Jaw Material Hardened Steel, Lifting Point Load Ring, Standards ANSI/ASME B30.20