Firestik SS-134A Screw-on Antenna Flat Mount Specifically designed to mount antennas on the flat side-view mirror arm supports commonly found on pick-ups No need to drill any holes in the vehicle or mirror support arm Mount can span material up to 1.4" (36mm) wide Comes complete with the K-4A antenna stud For antennas up to 4' (1.2m) in length