Stainless Steel Extra Heavy Duty 3/8-24 Stud Mount for Ham & CB Radio Antennas * Super Strong Pure Stainless Steel Oversize Mounting Stud * Fits All antennas using the regular 3/8-24 bolt-in thread. * Accepts any Optional cable with PL-259 Connector * Wrench Key included for tightening, Heaveiest Duty stud mount. * Install in most mount/brackets, or flat surface hole.