1. This cable end cap is specifically designed for mountain bikes and road bikes, and is a suitable accessory for the shifting and braking systems. 2. It comes in a variety of specifications, including 4mm rubber shifting cable end caps and 5mm rubber braking cable end caps. These can meet the needs of different bicycles relatively accurately. Whether it's a mountain bike frequently shifting gears on rough mountain roads or a road bike performing efficient braking for speed, they can provide reliable support. 3. It is made of plastic material, which has good flexibility and durability. It can be easily installed on the cable and can withstand various frictions and wears during daily rides. It can effectively protect the shifting and braking cables of the bicycle and extend their service life. 4. Each pack contains 100 cable end caps, which is sufficient to meet the needs of batch replacement or for spares, providing sufficient inventory support for bicycle enthusiasts and repairmen. Choosing this cable end cap can bring a more stable and smoother shifting and braking experience to your bicycle.