High-quality and Helpful: Aluminum Alloy Material CNC Turning Process, Stent Surface Anode Processing of Color. The thick rubber straps gaskets which on the inside of the ring will be helpful for your handlebar, avoiding slide and scratch your bars, movements when you on a rough road. Extra Space: You can assemble more of your favorite items on the handlebar with this handlebar extender, such as light, bicycle computer, phone, GPS, bell holder, clip lamp frame, mobile phone rack, code table, horn, etc. Note: The bike Handlebar Extender is Suitable for most Installation Handlebar with a Diameter of 31.8mm or 25.4mm(Add the gaskets). Easy to Install: With an Allen Key Wrench that included, you can easily install or detach the extension bracket within a minute. Customer Service: If you have any questions, please connect us team and we'll get back to you within 24 hours.