- Crafted from precision bearings and high-quality metal materials, this product ensures stable performance and exceptional durability for your cycling needs. - Its waterproof feature effectively prevents water ingress into the bearing, significantly extending its lifespan and maintaining optimal functionality. - Comes with waterproof screws that enhance the seal between the bottom bracket and bike frame, providing additional protection against moisture. - Compatible with road bikes, mountain bikes, and folding bikes, this product guarantees a stable and smooth ride across various terrains. Use Cases: 1. Ideal for serious cyclists who often ride in wet conditions, ensuring that the bearings remain protected and functional. 2. Perfect for mountain bikers who tackle rugged trails, providing durability and reliability in demanding environments. 3. A great choice for commuters using folding bikes, ensuring a seamless ride without the worry of water damage.