Feature: 1. Price‑performance ratio is quite outstanding, and it is a good choice for riders who are pursuing high‑cost performance. Universal mounting handlebar has a diameter of 22.2mm / 0.9in with high adaptability. 2. Using new aluminum alloy + plastic material, lightweight design, durable, mountain aluminum‑plastic handlebar, extended handle, flexible use. 3. Gear shifting, easy adjustment, fine‑tuning the brakes, the lines are tight and not slippery. 4. 3 x 10 30speed left and right handles, left hand dial 3 speed, right hand dial 10 speed. 5. Easy to operate, the bicycle gear can be quickly installed and disassembled. Specification: Item Type: Speed Change Brake Material: Aluminum Alloy + Plastic Left-Hand Dial 3-Speed Size: Approx. 130 x 77mm / 5.1 x 3in Applicable Installation Diameter: Approx. 22.2mm / 0.9in Weight: Approx. 272g / 9.6oz Process: Electrophoresis Process Application: Mountain Bike Features: Responsive Braking And Gear Shifting, Fast Braking, Improving Riding Safety.. Package List: 1 x Left Speed Change Brake1 x Right Speed Change Brake