This cable adjustment screw for bicycle tubes is specially designed for mountain and road bikes. It is compatible with shifters and rear derailleurs, making it an ideal choice for enhancing the shifting and braking performance of bicycles. The screw is made of aluminum alloy, ensuring excellent quality and durability. It can withstand the tests of daily cycling and provide long - term and stable support for your rides. It comes in a variety of specifications, including M5 and M6 cable screws. The different specifications can meet diverse needs. No matter what size of screw your bicycle needs for adjustment, you can easily find the right one. Its uses are extensive and crucial. It is mainly used for the adjustment of bicycle shifting and braking. The precise adjustment function can make your bicycle shift more smoothly and brake more sensitively, greatly improving the safety and comfort of cycling. Whether it's a professional rider pursuing extreme speed on the track or an ordinary enthusiast going for a casual ride, it can play an important role and enhance the cycling experience.