Converts 25mm/1 inch ball to 17mm ball mount, thus you could attach your GPS/Phone onto the 25mm Ball Mount for Ram B size 【17mm Ball GPS/Phone Mount Adapter】Compatible with Garmin GPS bracket and 17mm car phone holder base for magsafe or 17mm phone clamp 【Made of All Metal】Solid and sturdy, made of lightweight aluminium alloy, last for long use 【Anti-slip Corrugated Ball】Both the 1 inch ball and 17mm ball are corrugated, it will not slip in the socket and grips your device securely 【2.4" Short Arm】Short arm, less leverage, which is more solid and stable than the long arm 25mm / 1 inch to 17mm Ball Adapter for RAM Mounts B Size Double Socket Arm (2.4" Double Socket Arm )

Whit this mount, you can converts 25mm/1 inch ball to 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
- Made of All Metal, solid and sturdy
- Anti-slip Corrugated Ball
- 2.4" Short Arm