Features: Adjustable Hole Position: The bicycle water bottle cage hole adjuster allows you to easily adjust the position of your water bottle holder to fit your needs and preferences ensuring a comfortable and convenient ride every time. Sturdy and Lightweight: Made from quality aluminum alloy the kettle holder hole position fixed frame is both sturdy and lightweight providing a durable and reliable solution for carrying your water bottle on your bike. Rust-Proof Design: The rust-proof bike bottle rack conversion base is designed to withstand the elements ensuring that your water bottle holder stays in top condition even after prolonged exposure to moisture and humidity. 5 Color Options: With five different color options to choose from you can easily find the perfect match for your bike and personal style making this water bottle holder a stylish and functional accessory for any cyclist. Easy to Install: The hole adjuster and conversion base make it easy to install the water bottle holder on your bike so you can be ready to ride in no time. Specification: Material:Aluminum Alloy Size: 13.2*1.8cm Color:Black/Red/Blue/Gold/Silver Notes: Due to manual measurement please allow a slight error in size. Due to the difference between different monitors the picture may not reflect the current color of the item. includes: 1 *Bike Bottle Cage Hole Adjuster