Features: Made of high-quality aluminum alloy, with stable dimension, beautiful, sturdy and scratch resistant. Smooth corner and edges will not damage the bottle. Hold firmly, and not easy to drop even when riding on rugged mountain roads. Easy to install, with two stainless steel screws attached, which can be firmly fixed on the bike frame. Fits for bottles within 85mm in diameter. Simple design, easy to take bottle. Lightweight and portable, suitable for all bicycles with bottle cage screw holes.