Bike Bottle Cage Set: The bike bottle cage comes with 2 extra screws. This way, you can quickly and easily mount the bike bottle cage to your bike frame. Universal Size: The bike bottle cage fits all bike water bottles. The bike bottle cage surrounds the bottle and provides a secure grip so it doesn't fall off while riding. With this cup holder, you can carry bottles of different sizes. Anti-oxidation Material: The bike water bottle cage is made of high-quality aluminum. No matter how long it is exposed, how long it is used. Rust-proof bike bottle cage. Lightweight: The high-strength heat-treated aluminum alloy makes the bottle cage extremely durable. This cup holder is lightweight, which effectively lightens the burden for long-distance riders. Wide Application: The bike water bottle holder is compatible with a variety of models, suitable for mountain bikes, road bikes, city bikes, kids bikes, touring bikes, folding bikes, touring bikes, electric bikes, etc.