Dear Sir/Madam, Material:Aluminum Alloy 6082-T6 Color:silver or OEM Size:290*290mm,400*400mm, 520*520mm Product Name:Heavy Duty Big Concert Stage Roof Truss lighting System For Sale Shape:Square Circle arch triangle ladder truss Application:events/exhibition and so on Packing:Air Bubble Film or carton Service:Online 7x24hours Advabtages:competitive price, high quality Certificate:TUV CE ISO9001 Show More