Plate Clamp, Working Load Limit 4,000 lb, Attachment Type Load Ring, Open Type Manual, Close Type Manual with Lock, Minimum Material Thickness 0 in, Maximum Material Thickness 1 in, Minimum Jaw Opening 0 in, Maximum Jaw Opening 1 in, Material Steel, Clamp Type Plate Clamp, Operation Vertical Lift with 180 Degrees Flip, Attachment Diameter 1 7/8 in, Grip Type Teeth, Overall Height 12 1/2 in, Overall Width 3 5/8 in, Overall Depth 7 1/8 in, Standards ASME BTH-1 Renfroe Load Activated Plate Clamp is equipped with a safety mechanism, ensuring the clamp's gripping surface remains in contact with the plate when no load is applied during the no load conditions. This plate clamp is proof-tested prior to shipment. • 4,000-lb. safe working load• Pivoting Shackle eye lifting point.