25mm adapter is compatible with Garmin GPS and other devices with a 17mm mounting pattern
Adapter fits onto Arkon Robust Mounts or RAM Mounts that feature the 25mm ball...
Converts heavy-duty 25mm (1 inch) smartphone or tablet mounting pedestal to a 4-Hole AMPS pattern
Compatible with Arkon Robust Mounts, RAM Mounts and other 25mm ball...
This has a 17mm Aluminum Ball.
Converts 17mm smartphone or tablet pedestals to a 4-Hole AMPS pattern
Mount devices having an AMPS pattern, including VSMs, cameras, GPS...