Features: High-quality Materials: High strength aluminum alloy material high hardness light weight wear resistance corrosion resistance one-piece molding durable. Bayonet Design: Stable and not shaky the bottom bracket of the water bottle cage size increased can hold the water bottle firmly but also can be stuck on the neck of the bottled beverage suitable for most beverage bottles. Very Light: Lightweight design no burden a water bottle cage is only about 35.2g mounted it on top of the bike really without the slightest sense of weight gain zero burden. Widely Compatible: Wrap around solid fit water bottle cage for most beverage bottles casual riding more comfortable. After-service: If you have any questions after receiving the product please feel free to contact us and we will provide you with a satisfactory answer. Specification: Material: Aluminum alloy Size: 7.5*8.5*13.5cm Weight: 35.2g includes: 1 * Bottle Holder "