Index Twist Shifter

This is a shifter set for 21 speed bikes.  Twist shifters make for easy shifting on the go.
Set includes 7 speed rear index shifter, 3 speed front index shifter and cables
Front shifter is compatible with front derailleurs from all name-brand manufacturers
Rear shifter carries a 2:1 actuation ratio which is compatible with Shimano rear derailleurs
Black finish
SunRun drivetrain components combine high quality, performance and compatibility in a very affordable design that will work with almost any cycling application, from recreation and commuting, to competition.