Shimano 105 5700 double 10sp band on front mechwide link design 105 double front derailleur for increased rigidity and improved shifting response smoother shifting performance smooth shifting under heavy load at each rear position features for use with 105 st 5700 or ultegra st 6700 shifters only for optimum shifting performance wide inner link increased rigidity and takes front shifting performance to a new level especially under heavy load for 10 speed drivetrains light action spring reduc