1. This bicycle freewheel cover is designed for mountain bikes and road bikes, and it is a practical bicycle accessory. It is made of aluminum alloy, a material that is both lightweight and strong. While ensuring the durability of the product, it can effectively reduce the weight of the bicycle body. It can withstand various impacts and frictions during riding, providing reliable support for your ride. 2. It has excellent adaptability and can be well adapted to a variety of mountain bikes and road bikes, meeting the needs of different models. In terms of specifications, the model is FLG75. The precise design ensures a perfect fit with the vehicle, and the installation is convenient and fast. 3. Whether it is for daily riding, professional mountain cross - country, or road races, this freewheel cover can play an important role and is a good choice to enhance the riding experience.