Campagnolo veloce 10 speed rear mechthose who choose the veloce rear derailleur know that they have a system capable of offering the maximum reliability and precise operation the chain moves on pulleys that are special rubber sintered also the bushings in order to dampen vibrations upper to lower pulley axle 55mm aluminium bodies rollers on bushings rollers in special rubbercampagnolo veloce rear derailleur featuresshort or medium cage aluminium body weight 255g buy campagnolo veloce