For Tubes 48-51mm in Diameter. Supplied with M10 Bolt- Washer- Spring Washer & Wing Nut. T-Knob Closure. M10 Fixing. 30Kg SWL. Black or Silver FinishSWL: 30Kg Tube Dimensions: 48-51mm Fixing: M10 Dimensions: 130 x 140 x 30mm Weight: 25g. The CLP10 is a slimline- lightweight aluminium self locking easy clamp designed for use on 48-51mm truss. SWL 30Kg. lighting clamp-self locking clamp