Garmin makes some good heavy duty mounts. With the mainstream use of SmartPhones for GPS use, there’s a lot of unloved mounts out there. Now you can use your Garmin Nuvi mount with devices other than the one it was intended for. Manufacturers have become very aware of this technology transition and have introduced low price adapters. They all include a round adapter that fits the 17mm ball on the Nuvi mount. Typically includes a cradle or additional adapter to hold your iPhone, Samsung Galaxy or even an iPad Mini.
So don’t throw that mount out just yet. There’s still good use for it as presented in these pictures.

SmartPhone Adapter for Garmin Nuvi Mounts