Global Truss St-5055 - Heavy Duty Clamp With 210mm Spacer For 50mm Tubing. Heavy Duty Clamp With 210mm 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 2.62 Lbs.