SPEEDJAW 3 in Handscrew Clamp Storage Solutions Instructions Barn Door Pattern Z Instructions Barn Door Pattern Z Finish Type Primed Track Length (ft abrasive fiberglass backing and synthetic material projects firmly in place with up to 300 pounds of clamping force IRON AND STEEL CONSTRUCTION Constructed with a resilient ductile cast iron body with a plastisol padded locking handle SWIVELLING CLAMP PAD Fully adjustable pad base allows height and angle changes for better grip on odd shaped projects 3 4 INCH SHAFT 3 4 inch diameter threaded shaft allows for up to 7 inches of height adjustment DUCTILE IRON PAD Includes a removable ductile iron clamp pad that provides more surface area and better grip on metal projects REMOVABLE BASE Base and shaft are removable Sub Brand N A Series Name N A Type Handscrew Clamping Force (lbs