Lightweight front Conventional swing Dyna-Sys 10-speed double MTB derailleur for smooth gear changesDual Pull design for use with top or bottom cable routingThe regular Multi-fit band clamp assures easy and secure fit on any frame type, with adapters to suit seat tube sizes 34.9, 31.8 and 28.6 mmReinforced light weight chain guide adds rigidity and improved responseWider pivot link increases torsional rigidityEasy access angled adjustment screws and clamp boltAngled inner chain guide tail for increased tyre clearanceDyna-Sys 10-speed design - for use with Dyna-Sys 10-speed MTB drivetrainsSpecifically developed for 68 and 73 mm bottom bracket shells with a 48.8 mm chain line66-69 degree chainstay to seat tube angle range44-38 tooth outer ring compatible, total capacity 14 teeth