This adapter allows for the fitting of a 17mm device (like for Garmin) mounting point to other 25mm ball mount bases (like for RAM B size mount) 【17mm Ball GPS/Phone Mount Adapter】Compatible with Garmin GPS bracket and 17mm car phone holder base for magsafe or 17mm phone clamp 【360 Degree Angle Adjustment】The adapter allows for almost any angle mounting of your phone or for Garmin GPS 【Anti-slip Finish Ball】The ball set has a corrugated finish that will firmly hold the device at your set position and will not droop Sturdy Construction - The Double Socket Arm with 1" Ball Adapter is crafted from high-quality aluminum alloy and plastic, ensuring exceptional stability and a long lifespan for reliable performance 25mm / 1 inch to 17mm Ball Adapter for RAM Mounts B Size Double Socket Arm (2.4" Double Socket Arm )

The adapter includes a double joint ball socket and a 17mmto 25mm ball for Ram set. Whit this mount, you can convert a 25mm（1 inch）ball to a 17mm ball mount, thus you could attach your GPS/Phone onto the 25mm Ball Mount for Ram B size.

Keyfeaturs:
-17mm Ball GPS/Phone Mount Adapter for Ram Ball Mount
- 360 Degree Angle Adjustment
- Anti-slip Corrugated Ball
- 3.74" Arm