Feature: 1. Variable speed with visual window, fine adjustment of speed with both hands. 2. 22.2mm caliber, suitable for most mountain bikes, road bikes, shifting handles, integrated design, more fashionable. 3. Rugged, easy to install and easy to use. Specification: Name: Left & Right Brake Left & Right: 3 x 7 21 speed/3 x 8 24 speed Color:Black Package Included : 1 Pair MTB Bike Gear Shifter Lever W/ Shift Cable Set
