Feature: 1. 100% brand new and high quality. 2. Fitsfor 19-40mm handlebars, Easy Installation, Bottle Cage Adapter. 3. Material: Aluminum alloy + Rubber 4. Size: 8.3*5.5*1.6cm Description: 1.Double Bottle Design:This dual kettle bike rack convertor is universally adjustable for all bikes and electric scooters. Compared to other water bottle holders, this one can hold two water bottles, which is very convenient. (NOTE: Fits 19-40mm handlebars. Please confirm your bike size carefully before purchase.) 2.High Quality Aluminum Alloy: Made of high-quality aluminum alloy, it is durable, corrosion-resistant and high-strength, this double bottle cage adapter can support two water bottles. 3.Adjustable & Flexible:The great bike kit does not have a bottle holder mounting hole. It can be rotated 360 degrees for easy installation and removal. 4.Large & Compact Design:Multi-function water bottle holder conversion seat, which can be installed with two bottle cages and tire inflation cylinders, which is very convenient and durable. 5.90° Adjustable and Rotatable: The cup holder adapter can be installed on the handlebar and seat post of the bicycle horizontally or vertically according to your own needs. and Perfect for cyclist and rider. Packaged include: 1 x Bottle Cage Adapter. Note: Due to the different monitor and light effect, the actual color maybe a slight different from the picture color.