Product Description No compromises with the Veloce rear derailleur by Campagnolo Veloce shifting raises the standard of 10-speed groupsets and takes them to peak performance. The oversize parallelogram design, already used on the 11-speed groupsets, is " comprehensive" and ensures extremely fast, precise and quiet shifting. Specifications:Series:VeloceApplication:RoadGearing:10-speedMount:standardCapacity:32 tooth (short), 37 tooth (mid), 40 tooth (long)Compatibility:Campagnolo 10-speedCompatibility - Chains:10-speedTechnical Information:Derailleur Pulleys:10 teethMaterial:aluminiumOther Materials:special rubber (derailleur pulleys)Features:upper and lower derailleur body with exclusive Ultra-Shift™ design for lighter weight, reduced play, precise shiftingparallelogram made of aluminium according to exclusive Ultra-Shift™ geometry: maximum rigidity of the rear derailleur, fast shifting, highest precision, lowest playlong cage version optimises the performance of 3-speed shifting when using sprockets 12-30bronze plain bearingTechnology:Ultra-Shift™ On the Campagnolo rear derailleur, the oversize dimensions of the outer parallelogram plate that encloses the lower and upper derailleur body are immediately noticeable. A special feature that, together with the parallelogram, results in Ultra-Shift™ geometry - a technology that turns the performance of the latest 10- and 11-speed drivetrains into something extraordinary. This special shape, designed and developed entirely in the Campy Tech Lab™, gives the rear derailleur extremely high torsional rigidity. And not only that: the special shape ensures prompt and precise shifting in every situation. Models:short: Cage Length: SDerailleur Pulley Axle Distance: 55 mmLargest Sprocket Teeth (min.): 30 toothSmallest Sprocket Teeth (min.): 11 toothChainring Difference (max.): 16 teethcapacity: 32 teethManufacturer Numbers: RD11-VLSXS (silver), RD11-VLBXS (black) medium: Cage Length: MDerailleur Pulley Axle Distance: 72.5 mmLargest Sprocket Teeth (min.): 30 toothSmallest Sprocket Teeth (min.): 11 toothChainring Difference (max.): 22 teethcapacity: 37 teethManufacturer Numbers: RD11-VLSXM (silver), RD11-VLBXM (black) long:sold-outCage Length: LDerailleur Pulley Axle Distance: 89 mmLargest Sprocket Teeth (min.): 30 toothSmallest Sprocket Teeth (min.): 11 toothChainring Difference (max.): 22 teethcapacity: 40 teethManufacturer Numbers: RD13-VLSX3 (silver), RD13-VLBX3 (black)Colour Index:silver:Manufacturer Designation " bright silver"black:Manufacturer Designation " deep black"Contents:1 x Campagnolo Veloce rear derailleur Weight: black | short: 227 g black | middle: 260 g Manufacturer: Campagnolo S.r.l Via della Chimica 4 36100 Vicenza Italy info@campagnolo.com