... aluminum truss,spigot truss, 2,different size 3,light truss,stage truss,build truss 4,long history factory,good credit Material size ... *760mm etc.spigot to connect the standard aluminum alloyFrame :4,3,2 Type: 4,3 ... 3m, 4m,and so on Style:straight frame, round frame, arc frame Color: Optional. Connection: screw or bolt,spigot ... 2m,1.2-1.6m,1.6m-2m Frame: aluminum alloyTop floor: can be made by 18mm ...