3x7 Speed 21 Speed Bicycle Shift Brake 1 Aluminum Compatible with with Shift Mountain Bike Replacement Parts EF51-7 Levers, Pair, Alloy, 22.2mm

【Dual Control Manual Shift】3 speeds on the left, 7 speeds on the right, 21 speeds, suitable for all types of bicycles. Using this bike shifter allows you to enjoy a variety of riding experiences. [Size] Shifter dimensions: 17.5cm x 8cm x 3.5cm / 6.89 x 3.15 x 1.38 inches. Suitable for handlebars with a diameter of 22.2 mm. Compatible with V-brake systems and cable disc brakes. (Mechanical disc brakes.) 【Shifter】Visual display of gear position makes gear changes instantly clear. 21-speed mountain bike variable speed governor transmission one-piece brake. Shifter/brake levers are suitable for bikes with 3 gears in the front and 7 in the rear. 【Premium Material】High-strength aluminum alloy handle with anti-slip protective cover. This thumb gear shifter is made of sturdy metal, lightweight, and features an integrated design for easy control. It boasts stable quality and is fully compatible with speed control systems. 【Wide Range of Uses】Suitable for MTB / City Car / RV / Road Car / Folding Bikes. Note: Please use the correct installation method. Otherwise, the product may not function properly. We promise to provide our customers with the highest level of customer service. Description: - 3 speed (left side) + 7 speed (right side). - Shift cable included. - Visual gear position indicator makes gear changes easy to see at a glance. - Suitable for MTB. Applicable range: Handlebars with a diameter of 21-23mm. - The brake lever combo is designed to make shifting and braking a seamless process, making cycling easier. Specifications: - Material: Aluminum alloy - Speed: Left 3 speed / Right 7 speed - Mounting diameter: 22.2mm Package contents: - 1 Pair Xycle Shifter Brake