21/24 Speed Bicycle Shifter and Brake Lever Set - Ergonomic Dual Trigger & Thumb Lever with Gear Display Window, Left/Right Hand Shifters, Compatible with 3/7/8-Speed Drivetrains, Cable Included - Heavy-Duty Aluminum Alloy Construction for Mountain Bikes, Road Bikes, Hybrid Bicycles - Ideal for Downhill, Cyclocross, All-Terrain Riding - Compatible with derailleur systems, Bicycle Shifter Lever, Bicycle Hand Break Gear Shifter, Bicycle Controls with Cables, Bicycle Brakes,

Model: 21 Speed 24 Speed bicycle shift lever with handle set. Suitable for: left gear transmission, 3-speed transmission, 7-speed ultra high speed only right shifter, left and right transmissions 3x7 speed.Trigger type joystick: The right shifter is a trigger type 7/8 speed transmission, with a lever for downward movement and a thumb button for upward shifting. The left shifter is a friction/ratchet thumb lever used for triple cranksets.Gear Window: All transmissions come with intuitive gear d