Features: Rock solid, stiff secure grip. Easy to fit - no need to remove tape/grips/levers etc., simply opens up and you bolt on with a hexagon wrench. This is not the inferior cheaper style that snaps when you do this, or in cold weather! Sits in front of your stem/bar so you can look at your Garmin easily, keeping your eyes on the road/trail as well. Compatible with computers with 1/4 turn twist lock interface. Basically it's used for Garmin with 1/4 turn twist lock surface. You can use it for Gopro All Sports camera and for Garmin VIRB X XE/for AEE/for SONY/for XIAOYI/for SJ4000 5000 6000 action camera by using that adapter, which help you to install very easily. Compatible for Garmin Edge series 200, 500, 510, 800, 810 and 1000 bike computers. Note: The original clamp size of the GPS mount is 31.8mm. You have to insert the spacer to make it fit 25.4mm.