The Super Record Wireless new gear combinations enable fast up- and down-shifting, with an extremely smooth fluid gear inch ratio, to guarantee constant cadence in any situationSmooth shifting is guaranteed by single-tooth jumps up to the seventh gear, and especially in the second half of the cassette where jumps are a maximum of three teethDesigned for use with the N3W freehub body and compatible with all new-gen Campy road wheels10-27t12sp10-11-12-13-14-15-16-17-19-21-24-27SilverCS23-SR1207N3WUPC/EAN/GTIN: 8053340459566