Durable Quality: The bottle holder is made of high-quality PC material, durable and lightweight, the smooth edge will not scratch your bottle. Stay hydrated during your bike ride: Quick and easy access to your bike water bottle when you need it. Perfect for road, mountain, hybrid, touring, and electric bikes. Easy and quick installation: Includes necessary fasteners (4 screws and 2 keys), easy to install. The bolts are standard size for water bottle holders on most bikes with drilled holes. Washers are recommended for a tight fit. High-quality materials: The water bottle holder is made of PVC, which is solid and does not deform. The surface is treated with baking varnish, which has the properties of corrosion resistance, oxidation resistance, light resistance, and heat resistance, and can provide you with long-lasting use. 【Quality Control】 If you have any questions, please do not hesitate to contact us.