Heavy-duty single groove aluminum mirror mount with 4 bolts. The diameter of the aperture is 0.39"/10mm.

Securely attach TWAYRDIO antenna mount to your roll bar or mirror, ensuring a stable base for your mobile antenna. Fits bars up to 1.5"/4cm diameter.

The package also contains a heavy-duty SO-239 stud mount for 1/2" hole. It accepts antennas with standard 3/8-24 thread, and accepts cables with PL-259 connector.

The TWAYRDIO antenna mount is built to last with durable, weather-resistant materials. It can handle the tough conditions, making it ideal for off-road vehicles and various applications.

Package includes 1 mounting bracket, complete with the necessary mounting screws and bolts, and 1 SO-239 stud mount. Get ready to elevate your communication game with TWAYRDIO antenna mount!