Using this bottle cage adapter is easy. First, find the bottle cage mounts on your bike frame. Bolt the adapter onto these mounts. Then, take the provided bolts and use them to attach your bottle cage directly to the adapter. This will give you 55mm of vertical movement for the cage, making it easier to fit bottles when you have a frame pack. When it comes to which frames need how many adapters, if you have a regular - sized frame, one adapter might be enough. But if your frame is smaller, it's better to use a pair to avoid any overlap with your frame bags. Only use the bolts that come with the adapter. This ensures there's enough space between the adapter and the frame. To keep your adapter in good shape, regularly check the bolts for tightness. Since it's made of anodized aluminium, it's quite scratch - resistant, but try to avoid rough handling. If it gets dirty, just clean it with a mild soap and water solution and dry it thoroughly.