Bessey 8" Wood Hand Screw Clamp. It has large diameter spindles for added strength and durability. The spindles and swivel nuts are made from cold drawn, carbon steel. The acme thread provides rapid operation and years of hard use. The hardwood handles are over-sized for comfort, extra torque, and reinforced with steel ferrules. The spiral pin used to secure the handles to the spindle is easy to remove for repair or replacement. The metal parts are treated to resist rust. The jaws are made from quality hard maple for a lifetime of use and are oiled to resist glue. It has a 8" jaw length, 5" clamping capacity, 4" throat depth, and .44 spindle diameter.