descrition: 1.High load capacity; 2.easy to install; 3.good view for hanging light. Specifications:This truss is very mormal used in western country.According to different stage truss, we can do ladders truss, triangle truss, square truss.Materials: Aluminum alloy 6082-T6. which is stronger than other types materials.Main Tube(diameter*thickness): 50*2mm, 50*3mmBrace Tube (diameter*thickness): 20*2mm, 25*2mm  Shape: Can be square, triagle, layer, circle;.