The Garmin uses a magnet mount, but its proven to not quiet be enough, this clip adds extra security by clipping the device directly into the mount. The smoothed corners ensure the rubber of the device doesn't get damaged by clipping in and out.
Once installed, the device can be easily clipped in and out with 1 hand.
You will need some slightly longer M3 screws, as this fits between the ball mount and the magnet mount.
The author remixed this model.
A Remix of MagnusT's Model with smoothed corners on the clip to reduce marks on the device. I have also reduced the depth of the clips, still allowing a solid clip, but making it a little easier to clip in and unclip.