Feature: 1. These bottle holders with adjustable diameter are designed to fit and strengthen all kinds of bottles. 2. Made of engineering grade polycarbonate plastic structure, durable and for long life. 3. With this bottle cage, you can keep your water bottle fixing on the bike safety and easy to take out as your will. 4. It can protect your water bottle when you ride no matter how hard the journey is. 5. Very easy to wipe and clean, a good choice for roads bike, mountains bike, and ebikes. Specification: Item Type: Bike Bottle Cage Material: Plastic Color: As Pictures Shown Applicable Bottle Diameter: Approx. 45-70mm/1.8-2.8in Weight: Approx. 130g/4.6oz Package List: 1 x Water Bottle Cage 1 x Adjustable Part Support 1 x Install Base Bracket 1 x Connection Bracket 1 x Gasket 1 x Inner Hex Wrench