Those who choose the Veloce rear derailleurs know that they have a system capable of offering the maximum reliability and precision operation. The entirely aluminum body is robust and light. Special rubber on pulley dampens vibration on the chain.Largest cog capacity = Double: 29t, Triple 26tChain wrap capacity = Double: 30t, Triple 36tRequires 10-speed Ergopower levers and chainItem SpecificationsColorBlackWeight225gIntended UseRoadCassette SpacingCampagnolo 10Shifter/Derailleur CompatibilityCampagnoloLargest Cog26teethChain Wrap Capacity33teethDerailleur ActionTop-Normal (Traditional)Cage LengthMedium