GLOBAL TRUSS MINI 360 F14 (3/4 In. Wrap-Around Clamp) MIN TUBE SIZE 18mm MAX TUBE SIZE 20mm WILL ALSO WRAP AROUND DIAGONAL CROSS BARS OF F32, F33 and F34 TRUSSING ALUMINUM WRAP AROUND CLAMP FOR F14 MINI SQUARE TRUSS LOAD CAPACITY 22 Lbs