1. This product is a pedal extension device suitable for mountain bikes and road bicycles. It includes an extended pedal axle core, a locking pedal extender, and an axle converter. It is made of metal, ensuring reliable quality. The metal material makes it sturdy and durable, able to withstand various pressures and frictions during cycling and not easily damaged, thus providing long - term stable support for cycling. 2. The product comes in various specifications, including axle cores of different lengths and pedal spacers. The axle core specifications are 16 mm and 20 mm, which can meet different users' needs for pedal length and make the cycling experience more personalized. In addition, it is equipped with pedal spacers that can be flexibly configured in different combinations according to actual situations. 3. This product has excellent adaptability and can match well with mountain bikes and road bicycles. It is suitable for various scenarios such as daily cycling, mountain exploration, and road races. Its design fully considers the characteristics of the bicycle pedal system and can operate stably after installation, bringing a more comfortable and efficient cycling experience to riders. 4. This product is widely sold in regions such as Europe, South America, Southeast Asia, North America, and Northeast Asia and is favored by many cycling enthusiasts.