Item Type: Bicycle Water Bottle Cage Conversion Seat Material: Aluminum Alloy  Color: Black Weight: Approx. 40gApplicable: All Kinds of Conventional Handlebars Installation Steps: 1. Place a washer on the handlebars to prevent scratches. 2. Place the base on the washer and find a good position. 3. Tighten the base screw to prevent slipping. 4. Fix the kettle stand on the conversion seat. 1、The water bottle holder conversion seat is made of aluminum alloy and has a lightweight design that enables rapid assembly.  2、Suitable for 30.9mm/36mm seat tube and 38mm bend handlebar and straight handle.  3、Easy to install, horizontal and vertical installation can be adopted, easy to install, suitable for a variety of kettle stand.  4、The metal surface is anodized, strong and durable, beautiful and fashionable, effectively increasing corrosion resistance, insulation and heat resistance, etc  5、Beautiful, stylish and practical, this water bottle holder is a great choice.