CNC Machined by us from 6082 aluminium & anodised silver as standard, giving a product that is both attractive and durable. The clamp is fitted using an M8 high tensile cap head bolt and the tube using an M6 bolt. The tube has a solid machined bar end made from durable polyacetal which adds to the crash protection and a retaining groove to register on the fixing screw for safety. Sizes range from 35mm to 55mm covering most popular bikes. Spare clamps & tubes can be supplied separately as required. (see separate size chart for applications). Tube length is 270mm as standard (ACT270) The drop angle of these clip ons is approx 7 degrees. Recommended torque settings: M8 PINCH BOLT = 23 Nm (16.5 lb-ft) M6 PINCH BOLT = 10 Nm (7.0 lb-ft)