Experience control and efficiency with the split aluminum thumb bike accessory speed controller. This product includes a split thumb with cable and an aluminum flat , engineered for optimal performance. practical for various cycling activities, it provides reliable and quick gear changes, enhancing your overall ride quality. The installation process is simple, allowing you to upgrade your bike effortlessly and enjoy a smoother ride. Features -Color:Multi -Material:Aluminum -Size:10.80X5.00X3.50cm/4.24X1.97X1.38in -Ergonomic comfort: the ergonomic design of this split aluminum ensures a comfortable and secure grip, making it easier to control your bike -Userfriendly installation: thanks to its split design, this is simple to install and adjust, saving you -Smooth cable operation: the included cable allows for smooth and flexible operation, giving you better control over your bike's performance -Lightweight and strong: made from lightweight aluminum, this is easy to handle and adds minimal weight to your bike, while still being strong and durable -Precision speed adjustment: the speed controller offers precise adjustments, allowing you to tailor your bike's speed to your specific needs and preferences Package list: 1 pair x bicycle shifters