Shimano 3×7 Shifter Brake Lever Combo

Features:
ST-EF51 Set 3×7 Speed Shifter Brake Lever Combo 21 Speed Black V-Brake For Mountain Bike;
21-speed transmission, ergonomic design of position and trigger handle.
Compatible for:
Front 3 gear, Rear 7 flywheel and 21-speed positioning transmission system.
Scope of application:
21-23mm diameter handlebar.
Easy to read optical gear display
Left displays 1 – 3
Right displays 1 -7
Smooth light and quick action (rapid fire)
Includes cables (shifter housing not included)