J&L Bicycle Computer Mount-fit for Garmin Edge 200/500/800/510/810&Bryton,MIO-31.8 For 31.8mm handlebar (with the adapter) Approximate Weight: 22g Fit with following: Garmin Edge 200/500/800/510/520/810 Fit with following: Bryton Rider 20,21,30,35,40,310 (Except 50), MIO