Description: *Brand new and high quality *Made of high quality material, and practical to use *The kettle rack conversionseat is firm and *Make drinking water within reach *Adjustable angle for easier handling *Multiple positions can be installed *Aluminum alloy frame, CNC anodizing Specification: Material: 7075 aluminum alloy Size: 78 * 34mm Weight 41.4g (including package 65g) Color black / red Package size 71 * 120mm Applicable to bicycles, road vehicles, folding vehicles, etc Applicable diameter: 30.9-31.8mm Compatible with 222mm after using the supplied washer Package Includes: 1x water bottle holder Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Bike Water Bottle Holder Conversionseat Aluminum Alloy Folding Bike Seattube. High-quality product,each process is strictly implemented in accordance with process standards. Perfect price-performance ratio, save you more money. We will ship it ASAP,when you place the order. If you have any questions,please feel free to contact us,we will solve it for you.