Campagnolo veloce 10sp rear derailleurthe campagnolo veloce 10 speed rear derailleur is developed for precise and silent gear change with classic italian styling'. '.strtoupper('f')eatures aluminium body compatible with campagnolo 10 speed shifters only mount type standard hanger type mount largest sprocket 30t overall capacity short cage 32t medium cage 37t smallest sprocket 11t highest chainwheel difference short 16t medium 22t upper to lower pulley axle 55mm rollers on bushings rollers in special rubber weight 227g short cagemanufacturer reference codessilver short cage cpbs132black short cagecpb132cblack medium cage cpb134c silver medium cage cpbs134technologiesultra shift this control by campagnolo is regarded by everyone as the fastest and most precise'. '.strtoupper('t')hanks to the ultra shift patented system you can move the chain simultaneously up 3 sprockets and then 5 down'. '.strtoupper('f')urthermore, the lever design allows for an ever lighter shifting, whilst maintaining the click sound featured on all campagnolo controls'. '.strtoupper('t')he ultra shift system is featured on super record, record and chorus groupset ranges.buy  campagnolo components from chain reaction cycles, the world's largest online bike store.