Product name: Bicycle kettle holder hole position adjuster Product size: black-2:13.2*1.8cm/5.11*0.71inch hole:4.7cm/1.85inch black-3:25*1.8cm/9.84*0.71inch hole:4.7cm/1.85inch Product color: As shown in the figure Product material: aluminum alloy product features: 1. Versatile: The bike water bottle holder adapter is designed to fit different types of frames with various hole positions, making it perfect for any cyclist. 2.Adjustable: With its 360-degree rotating design, the multifunctional conversion seat allows for easy adjustment of the water bottle holder's angle for convenient access while riding. 3.Durable: Made of high-quality materials, the road bike water bottle holder extension bracket is sturdy and durable, ensuring long-lasting use. 4.Easy Installation: The bike water bottle holder adapter can be easily mounted on the bike frame with its simple and effortless installation process. 5.Convenient: The bike water bottle holder adapter adds an extra water bottle holder to your bike, making it more convenient for long rides and cycling adventures. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact mewe will give you some suggestion, but it is for you reference only. Shipment includes: 1 pc Bicycle kettle holder hole position adjuster