Useful Extender: Fits onto your bike handlebars to create extra storage space for your GPS, bike lights or stopwatch. Application: The bike handlebar extender can be installed on the seat post or handlebars of your bike. Suitable for mounting handlebar diameter 25.4mm to 31.8mm. High quality material: the tube is made of carbon fiber and the bracket is in aluminum alloy, very strong and lightweight, portable and durable. Gasket design: Extremely lightweight, anti-slip and shockproof material, effectively preventing the handlebar from slipping. Carbon fiber handle length: 20CM. Easy installation: Combined with hexagon socket screws, the bicycle handlebar extension bracket is easier to install and detach.