High Quality MaterialMade of 6061-T6 heat-treated aluminium alloy, rust-proof, ultra-light, durable and robust, ideal for professional and amateur riders. Small size (14 x 8.5 x 10 cm) and light weight (51 g). Anti-scratch and rust-free 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. Anodised material means the bottle holders will not rust. No matter what the weather they are exposed and how long they are in use, it is sure to not rust. Easy installation: simply attach the bicycle bottle holder with the Allen key in the screw holes of the bicycle frame. Please note: for easy installation, threaded holes are required in the bicycle frame. Perfect design strengthens the grip and holds bottles securely while cycling. Don't worry, it could fall off the bike. CompatibleOur stylish bicycle water bottle holders are suitable for almost all standard water bottles and water bottles. They can be flexibly adjusted and adjusted to fit the appropriate water bottle and can be easily stretched. Fits various water bottles up to a diameter of 60-85mm (2.4-3.3 inches). It is an effective assistant for long cycling. Package includes: 2 x bicycle bottle holders, 1 x Allen key, 4 x screws. The bicycle cup holder 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. Product information Colour:Schwarz