Description:With this durable odometer extender, you can install odemeter in your bicycle's stem firmly. When you cycling, it helps you to read data from your odometer conveniently. Great bike accessory for you. Features:Made of good quality materials, anti-rust, high strength, durable and lightweight. Easy to install and disassemble, can be firmly mounted on the stem of your bike. Its bendable in vertical directioin, you can adjust it for easy reading from the odometer. Suitable for both mountain bikes and road bikes. The plastic mount is compatible with various brands of odometers. Specifications:Material: Aluminium Alloy + PlasticOptions: Black-for Garmin; Red-for Garmin; Silver-for Garmin; Black-for Bryton; Red-for Bryton; Silver-for BrytonQuantity: 1pc Mount Size: approx. 8 x 3.5 cm / 3.14 x 1.37 inch Hole Diameter: 28.6mm (Suitable for 28.6mm bike stem) Thickness: Approx. 5mm/0.2inWeight: approx. 19gPackage Included:1 x Bike Odometer Extender Notes: for Garmin (suitable for Garmin 1000/820/810/800/520/510/500/200) for Bryton (suitable for R530/R330/R310/R100) .