Best Lee Valley Dubuque Aluminum Bar Clamps

Made in USA by the Dubuque Clamp Company, these aluminum bar clamps are lightweight, extremely rigid, and easy to adjust. The strong extruded bars measure 1 3/8″ × 7/8″ and have side walls nearly 1/8″ thick for excellent resistance to bowing and twisting. The bar remains reliably straight under clamping force, so you can clamp work against it to prevent misalignment.

The movable head has a spring clutch for fast adjustment on the notched bar, and the fixed head has a 1/2″ diameter Acme-threaded screw for final tightening, with a large, easy-to-turn wing knob. 1000 lb load rating. Maximum opening capacity listed.