[Durable Aluminum Alloy] The bottle cage is made of high-strength aluminum alloy, making it rust-resistant and lightweight, yet extremely strong and durable. It prevents corrosion from rain. The smooth, one-piece curve prevents contact with the bike. [High Stability] The bottle holder's cylindrical design allows for smooth bottle removal. It wraps around the bottle securely, ensuring a secure fit. Easy access and comfortable riding. [Easy Installation] Easily attach to your bike. Use the included tool to attach to the appropriate screw holes on your bike frame. *Two screws are included with each bottle cage; a wrench is not included. [Suitable for Most Water Bottles] Weight: Approximately 40g (single bottle) Size: Approximately 14.4*7.9*6.6cm (single bottle). Fits most bottles. Made of sturdy aluminum alloy, it can be fine-tuned to fit different bottle sizes. It holds the bottle securely, even on rough roads, preventing it from falling due to vibrations. [Applicable Vehicles] Compatible with a variety of vehicle types. It's also suitable for road bikes, mountain bikes, MTBs, folding bikes, and mamachari bikes. Please make sure your bike frame has mounting holes. This bottle cage combines beauty and performance. If you have any questions about the product, please contact us.