Contrast Out in Front Handlebar Mount for Garmin Edge Bike Computer - Black Logo Fits all GARMIN EDGE series headunits including 200/500/800/510/810 and the 1000 Fits 31.8mm handlebars and also 25.4mm/26mm handlebars using the provided rubber sleeve Sits in front of your stem for an optimal position, meaning that you can see your computer without moving your head to much Measures 90mm from centre of Bar clamp to centre of GPS dial Lightweight and incredibly simple to install with logo on body