Global Truss 2" Aluminum Wrap-Around Coupler Clamp, 1100 lbs Weight Capacity Heavy Duty Clamp With Half Coupler For 50mm Tubing Compatible with F31-F32-F33-F34-F44P Truss Includes hardware: R-Clip & Pin Minimum Tubing Diameter 48mm and Maximum Tubing Diameter 51mm Max Load Capacity 300 kgs. - 660 lbs.