Product Features. Durable and Safe - The out-front bike mount is made of high-quality plastic and is durable. It can securely lock and perfectly position your bike computer on your bike so you can focus more on your own riding. Lightweight - The weight of the out-front bike mount is only 24 grams, you will not feel the increase in weight during riding. [Product Information] Product Name: Bicycle Code Table Extension Bracket Product material: plastic steel Product size: 11 * 5 * 3.5cm (for handlebar caliber 31.8mm) Applicable models :GARMIN edge 200/500/800;bryton RIDER 20/30/40 Product color :black Packing list:Bicycle stopwatch extension bracket*1 Please note 1. Due to the long transportation time, the goods may be damaged during transportation, if the goods are damaged, please contact us in time. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor.