High-quality material: bicycle bottle holder made of high-strength aluminium alloy material, durable and lightweight, can effectively reduce the load of long-distance riders. The mount is suitable for various types of bikes, including road bike, mountain bike and folding bike. It is also an ideal companion for weekend trips or daily training.No rust: thanks to the anodised material, the bicycle drink holders cannot rust. No matter what weather you are exposed and how long they are in use, there is certainly no rust.Anti-scratch design: both sides of the bottle holder are equipped with wheels to prevent scratching of the water bottle. Standard size bottle holder, fits most water bottles. It is an effective assistant for long cycling.Easy installation: fixed with two standard M5 x 12 mm screws, simply attach the bicycle drink holder to the screw holes of the frame with the Allen key. (Please note: bike frame requires threaded holes to install the cage).Package includes: 2 x bicycle bottle holders, 1 x Allen key, 4 x screws. Perfect for various bicycles such as road bikes, mountain bikes, motorcycles, normal bicycles etc.