Made for all types of regular duty. Easy to open and close and suitable for close quarters clamping with a 2-1/2 in clamping reach from edge of bar to center line of screw. 1/4 in x 3/4 in plated, round edge, high carbon steel bars with 100,00 lbs., psi tensilestrength. 3/8 in cold drawn steel screws with smoothly cut U.S.S. threads. Malleable and/or ductile iron; powder coated orange finish castings. Multiple-Disc-Clutch design; 3/4 in diameter swivel with steel internal tooth washers for positive 'stay on' power. Varnished hardwood handle. 600 pound load limit.