1,aluminum truss,spigot truss, 2,different size 3,light truss,stage truss,build truss 4,long history factory,good credit Material size details: ... frame, arc frame Color: Optional. Connection: screw or bolt,spigot Canopy:sun canopy ,rain canopy. no canopyCertification:CE, TUV, ISO9001 ... 700kg/square metereasy to set up and remove and moveable aluminium spigot truss foundation,aluminum spigot truss