Mirror Mount with SO239 antenna stud! The perfect solution for mounting a CB or any two-way radio antenna to horizontal mirror arms or luggage carriers. Stainless steel material fights short term rusting and is guaranteed to last! Three-way mirror mounts are popular but if your application requires a true mount the PTRV1-SS mount is the way to go! The PTRV1-SS mirror mount with SO239 stud is constructed from heavy duty aluminum with the capability to bolt to any horizontal post up to 1 inch in diameter. The PTRV1-SS will easily support antennas up to 5 feet tall. The SO239 stud mount is threaded to accept 3/8x24 antenna ferrules or accessories. Heavy duty mount 3/8 x 24 threaded stud included Holds antennas up to 5 feet tall SO239 Screw on connector for coax Mounts on vertical or horizontal posts up to 1 inch in diameter