The Larsen NMOMMRDSN magnetic antenna mount is to be used with Motorola-style antennas. This Motorola-style magnet mount provides temporary, easily removable mounts for mobile antennas on your vehicle. brbrThis high-frequency 0 – 3000 MHz magnet mount features a fully weatherized cable interface and a center pin that is removable to convert it from a standard frequency mount to a high-frequency mount. The mobile antenna vehicle mount is constructed from a zinc alloy body plated with copper and nickel that is black coated. The magnetic base has a protective coating designed to prevent damage to your vehicle. The vehicle antenna mount thread size is 1 1/8 in 18. The Larsen vehicle magnetic mount for Motorola-style antennas includes 12 ft of RG-58A/U cable. An N connector is installed.