Plate Clamp, Working Load Limit 12,000 lb, Attachment Type Load Ring, Open Type Manual, Close Type Manual with Lock, Minimum Material Thickness 1/4 in, Maximum Material Thickness 1 3/8 in, Minimum Jaw Opening 1/4 in, Maximum Jaw Opening 1 3/8 in, Material Steel, Clamp Type Plate Clamp, Operation Vertical Lift with 180 Degrees Flip, Attachment Diameter 3 1/2 in, Grip Type Teeth, Overall Height 20 1/8 in, Overall Width 3 7/8 in, Overall Depth 10 1/4 in, Standards ASME BTH-1