Astatic MM4401 3/8x23
Magnet Mount, Heavy Duty, 3/8x24 Threaded Mounting.
The MM4401 features four of our 5 inch magnets properly spaced on a heavy-duty aluminum frame. The MM4401 is the strongest possible solution for those really big antennas. It comes with 17 of cable. It is available in three different antenna mounting options.
MM4401(3/8-24 Threaded Mounting) .
1 Pc of Magnet Mount Heavy-Duty