mount your Garmin eTrex GPS on any existing quarter turn mount meant for Garmin edge or similar.
If you have a Wahoo please see my
Etrex to Wahoo mount
Compatable with the following Garmin GPS units:
Alpha
Approach
Astro
Colarado
Dakota
eTrex (excluding older eTrex h models with different mounting style)
GPSMap
inReach
Oregon
Rino
Sport Pro
Please note. I have found that there is dimensional variance between different GPS units causing some to fit very tight in the mount. If you experience an extra snug fit some light sanding may be required to dial in the fit.