Built to last: Constructed from a durable aluminum and nylon blend for reliable strength on the road or during daily rides. The mixed materials balance rigidity and impact resistance so the part withstands regular use. Clear compatibility: Designed specifically for 24 mm bottle cage mounts, so it fits standard 24-mm holders without modification. Thread options for different frames: Available in Type A (external thread) and Type B (internal thread) to match a wide range of bicycle models and mounting setups. Smooth, low-maintenance performance: Equipped with sealed bearings and porcelain (ceramic) bearings to deliver smooth rotation and reduce wear over time, helping the component maintain performance with less frequent servicing. Why this matters Keeps you hydrated on the move: Fits common 24-mm bottle cages so you can securely carry a water bottle on road bikes, commuters, or touring setups. Durable in real use: The aluminum/nylon construction resists road vibration and impacts better than all-plastic designs, extending service life. Easy frame compatibility: Two thread types let you choose the right option for your frame without adapters. Use scenarios Road cycling: Install on a performance road bike with a 24-mm cage to ensure a secure, low-friction mount for long rides. Daily commute: Fit the unit to a commuter bike so your bottle remains stable through stops, starts, and city roads. Light touring or bikepacking: Use on bikes where dependable mounting and reduced maintenance are priorities during multi-day rides. Key specifications at a glance Material: Aluminum + Nylon composite Thread types: Type A (external), Type B (internal) Compatibility: 24-mm bottle cage mounts Bearings: Sealed bearings + porcelain bearings for smooth rotation Purchase this part when you need a robust, compatible, and low-maintenance solution for mounting a 24-mm bottle cage on your bicycle.