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 E-Type; E-type mounting system allows for perfect set up every time Top pull design Band on Dual Pull; 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 & rigidity for enhanced shifting response For triple 40-42 tooth chainring For 66-69 degree chainstay angle