Wide link design Dyna-Sys 10-speed Deore MTB front derailleur Conventional swing design Wide pivot link design for greater torsional rigidity improves shifting response and service life Multi-fit compatibility means that this front derailleur will fit any frame type or seat tube size Cable routing can be used with frames built for top or bottom pull derailleurs Dyna-Sys 10-speed MTB drivetrain compatibility Reinforced steel chain guide offers high strength and rigidity for improved shifting response For double 34-38 tooth chaining For 66-69 degree chain stay angle