... speakers for exhibition and performance,also can be stage truss FOB: USD44 Usage: truss is used for hanging speakers and lightsMaterial: ... screw or conical coupleShape square,triangle, layer,circle…Such stage can be used in exhibition,performance,advertisemt, outdoor ... Sketch,Commercial Falilities,Interior Sketch LED Lighting Truss,Lighting Truss, Exhibition Truss,Performance Truss,Stage Truss