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 & service life Direct frame fit for easy & accurate installation giving perfect alignment Top pull design Dyna-Sys 10-speed MTB drivetrain compatibility Reinforced steel chain guide offers high strength & rigidity for enhanced shifting response For double 38-44 tooth chainring For 66-69degree chainstay angle