Feature:1. Made of durable aluminum alloy and plastic, it achieves the best performance and maximum safety and longevity.2. Mountain bike variable speed governor drives the integrated brake, which has the functions of shifting and braking, and is easy to use.3. An optical gear display indicator is designed to display the gear position. All shifters are equipped with wires and noise reduction buffers to provide precise and consistent shifting performance.4. Trigger‑type handle, the right shift lever is a trigger‑style 7‑speed/8‑speed shift lever, with a lever for downshifting and a thumb button for upshifting, and the left shift lever is a friction/ratchet for three chainrings Thumb stick.5. Ergonomic design, compatible with lining type, county arm type, roller type and mechanical disc brake, the operation is more comfortable.6. The shift/brake lever is suitable for bicycles with 3 gears at the front left and 7‑speed/8‑speed at the rear right. The inner diameter of the handle mounting hole is about 22.2mm, which is suitable for mountain bikes and road bikes.Specification:Item Type: Bicycle Shift Brake LeverMaterial: Aluminum Alloy + PlasticProduct Size: Approx. 15.5x8.7cm/6.1x3.4inMounting Handlebar Diameter: Approx. 22.2mm/0.9inSuitable for Mountain Bikes, Road Bikes, Etc..Package List:2 x Bicycle Shift Brake Lever