This product is a pedal extension with a lengthened axle core, a locking pedal extender, and an axle converter for mountain and road bicycles. It is made of metal, ensuring high - quality and reliable performance. The metal material makes it robust and durable, capable of withstanding various pressures and frictions during cycling, and it is not easily damaged, providing long - term and stable support for cycling. It offers a variety of specifications, including axle cores of different lengths and pedal spacers. There are axle core specifications of 16mm and 20mm, which can meet the different requirements of users for pedal length to achieve a more personalized cycling experience. It is also equipped with pedal spacers, and different combinations can be flexibly configured according to actual situations. This product has good adaptability and can be well matched with mountain and road bicycles. It is suitable for various scenarios, such as daily cycling, mountain exploration, and road races. Its design fully takes into account the characteristics of the bicycle pedal system. After installation, it can function stably, bringing a more comfortable and efficient cycling experience to riders. It is widely sold in regions such as Europe, South America, Southeast Asia, North America, and Northeast Asia, and is favored by many cycling enthusiasts.