1,aluminum truss,spigot truss, 2,different size 3,light truss,stage truss,build truss 4,long history factory,good credit Material size details: 150* ... , round frame, arc frame Color: Optional. Connection: screw or bolt,spigot Canopy:sun canopy ,rain canopy. no canopyCertification:CE, TUV, ISO9001 ... metereasy to set up and remove and moveable many side spigot truss connection,bolt truss connection,