Incredible space: Our tube is 20cm long, which means you can mount more items, such as light/bike computer/phone/call holder etc. Secure: Thick rubber bands Gaskets on the inside of the ring that attach to the bars for a strong and secure grip, won't shift or scratch your bars LIGHT AND DURABLE: Aluminum alloy and bracket are super lightweight and durable, only 1.8 oz for the extension bar and 0.91 oz for the bracket (each). High applicability: suitable for 31.8mm caliber handlebars (used giveaway spacers fit 25.4mm diameter handlebar) Quick to install: With an Allen key, you can install the extension bracket in under a minute. Characteristics: 20 CM long tube Thick rubber on the inside of the rings Super light Easy to install Specifications: Material: aluminum alloy The color black, red, blue Clamp diameter: 31.8mm Tube diameter: 22.2mm, length: 200mm Suitable for 31.8mm caliber handlebar (with small non-slip skin) or 25.4mm caliber handlebar (with large non-slip leather)