High Quality - High-strength aluminum compared to carbon fiber bars. Super light material, portable and durable, stable, rust-proof. And the brackets are well-constructed and sturdy. Incredibly More Space - The super long/extended tube can mount more items such as lights, bike computers, phones, GPS, watch holders, clip-on lamp frames, mobile phone holders, code tables, horns, etc. Fits Most Bikes - The bike extension bracket fits most bicycle handlebars. Fits most bikes. Suitable for 25.4mm handlebars (add large gasket) and 31.8mm handlebars (add small gasket) (please check the size carefully before purchasing). Easy Installation - Thick rubber bands The gaskets inside the ring that attach to your bars for a strong and secure grip effectively prevent the handlebar extender from slipping. With an Allen key, you can easily install and remove the extension bracket in one minute. Safe and Stable - Don't worry about the angle tilting, getting damaged, or creeping on an uneven road as soon as it's fixed to the stem with our specially designed screws. Much more stable and non-slip than other bike extensions with clamps. Bicycle Handlebar Extension Mount Tube Extender 20CM Aluminum Alloy, Double Handle Holder for Mounting Smartphone Light GPS Adapt to Handlebars Specification: Material: Aluminum Alloy Extension bracket length 20cm Extension bracket diameter: 20mm Clamp length: 9cm Extension clamp for handlebar diameters: 25.4 and 31.8mm Package included: 1 X Bicycle Handlebar Extender 2 X Clamp Mounts 1 x Allen Key 1, Super light and superior aluminum alloy material, durable. 2, Applicable to crossbars and parallel handlebars. 3, Suitable for most types of bicycles. 4, Suitable for 25.4mm handlebars (add large gasket) and 31.8mm handlebars (add small gasket). 5, Double clamps for strong and secure grip.