Shimano tiagra 4600 2x10sp band on front mech10 speed compatible tiagra front derailleur delivers pro features to sport level road riders features extra wide pivot link increases rigidity while reducing flex for improved shifting response aluminium links and band to save weight and increase rigidity for road cycles equipped with 10 speed drivetrains plated steel chain cage maximum capacity of 16 teeth for outer rings 50 56 tootha 2 year warranty is offered with all shimano products from chai