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