Wide link design Dyna-Sys 10-speed Deore MTB front derailleur Top swing design Wide pivot link design for greater torsional rigidity improves shifting response & service life Multi-fit compatibility means that this front derailleur will fit any frame type or seat tube size Cable routing for down pull Dyna-Sys 10-speed MTB drivetrain compatibility Reinforced steel chain guide offers high strength & rigidity for enhanced shifting response For double 36-38 tooth chainring For 66-69 degree chainstay angle