1Pair V-Brake ST EF51 Set Brake-Shift Lever with Gear Shift Cable 3 x 7 Shifter-Brake Combination with Gear Indicator for V-Brake Black 21 Speed

The 21 Speed transmission, provide ergonomically designed by position and trigger handle, make transmission easier operation, lower division, visualization of the gear display, speed changes at a glance. Item Specifics: Model: suitable for front 3 gear, rear 7 flywheel and 21 speed positioning transmission system Scope of application: 21-23mm diameter handle bar Color: Black Package Included: 2 * Transmission (Left 3 speed / right 7 speed) 2 * Brake line Our Policy: Please make sure your address is correct address before you pay. If you have any questions about the item before purchase and after, please feel free to contact us. Any questions can be solved through communication. Please contact me before leaving any negative feedback.