Aluminum Roof Stage Truss System Display Lighting Truss Design Material : Aluminum Alloy. Usage : TV Show, Indoor or Outdoor Concert. Characteristics : Space Frame Truss. Structural Classification : Square Truss. Product Classification : Spigot Truss and Screw Truss. Shape : Sqaure, Triangle or Circular. Color : Silvery. Truss Specification : 300X300mm, 400X400mm, 500X500mm. Lead Time : 10days in Usual. Place of Origin : Guangdong China (Mainland). Price : Reasonable. Quality : The Best.