Vehibrckt 1 inch Ball Mount Base Ball Adapter with Threaded Bolt 1/4-20 Stainless Steel Compatible with RAM Mounts Ball Socket Arm in B Size for Action Camera/GPS/Bike/Motorcycle/ATV Phone Holder/Rearview Mirror. Compatible with ram 1 inch ball mount 1/4 20/1 inch ball mount/ram ball mount 1 inch/ram mount ball/ram ball mount 1 inch/ram mount motorcycle/ram mount ball 1/4-20 1 ram ball mount/1in ram ball mount/ram ball mount Compatible with ram mount rearview mirror, motorcycle mirror ram ball mount, 1 ball mount plate. Compatible wtih ram mount motorcycle/1 inch ball mount aluminum/1 inch ball mount with 1/4 inch threads/1 inch ball screw mount. Compatible with ram mount ball/ram 1 inch ball mount/ram ball/ram ball adapter 1/4-20/ram ball mount 1 inch/ram ball mount 1 inch rubber/ram mount 1 inch ball/ram mount 1 inch ball female/ram mount ball/ram mount ball/ram mount ball 1/4-20/ram mount ball 1”/ram mount clamp 1 inch ball/1 ball mount base/1 inch ball arm/1 inch ball mount/1 inch ball mount arm/1 ram ball mount/1" ball mount bolt 1/4-20 1" ball/1/4 20 mount arm/ram ball 1/4-20/ram ball bolt on/ram ball with bolt/ram mount 1/4/ram mount arm/ram mount ball 1/4-20/ram mount size b/ram mounts/ram mounts ram ball mount 1 inch/ram-mounts. 1 inch ball mount base threaded rearview mirror is easy to install. This screw ball mount compatible with RAM Mounts B Size Double Socket Arm. The diameter of this ball mount is 1 inch, and the surface is covered with non-slip rubber, which is non-slip and durable.Suitable for motorcycles, electric vehicles, and ATVs with a diameter of 1/4-20 on the rear-view mirror compatible with ram mount double ball socket arm.