For Tubes 48-51mm in Diameter. Supplied with M10 bolt- Washer- Spring Washer & Wing Nut. Wing Nut Closure. M10 Fixing. 50Kg SWL. Black or Silver FinishSWL: 50Kg Tube Dimensions: 48-51mm Fixing: M10 Dimensions: 110 x 30 x 88mm Weight: 17g. Slimline- lightweight aluminium half coupler designed for use on 48-51mm truss. SWL 50Kg. half coupler-coupler-lighting clamp