Duratruss BIG Jr. Clamp 100kg; truss clamp suitable for trusses with 38-41mm diameter with quick release system; material: aluminum 6061 T6; screw: M10 x 30; max. load/SWL: 100kg; dimensions (width x height): 58.3 x 30.0 mm (without screw); weight: 0.134kg;