Global Truss St-5056 - Heavy Duty Clamp With 330mm Spacer For 50mm Tubing. Heavy Duty Clamp With 330mm Spacer For 50mm Tubing. Compatible With F31-F32-F33-F34-F44P Truss. Minimum Tubing Diameter 48mm, Maximum Tubing Diameter 51mm, Max Load Capacity 500 Kgs. - 1100 Lbs. Tuv Approved. Unit Weight 2.27 Lbs.