This is the wide link design Shimano Deore M610 Triple 10-Speed E-Type Front Derailleur. It is a top swing, dual pull, wide pivot link design for greater torsional rigidity which improves shifting response & service life. The E-tyre mounting system means that you can set it up perfectly every time. This Deore M610 front derailleur is compatible with Dyna-Sys 10-speed MTB drivetrain & bike with a 66 to 69 degree chainstays angle.