... tent truss,roof truss,lighting truss,suqare truss,triangle truss,stage truss,project truss,display truss,circle truss,exhibition truss,spigot truss,truss system,flat truss,ladder truss,screw truss,bolt truss,duty truss,show truss,booth truss,curve truss 1 ... .5m,2m, 3m, 4m 6.Size available:250mmx250mm 300mm*300mm,400mm*400mm450mm*450mm,500mm*600mm,520mm*760 mm,Main Tube (diameter ...