The Laird GB8BI magnetic antenna mount is a Motorola-style mobile antenna mount that offers removability. No drilling into the vehicle is required for installation making the location of the magnetic mount easy to adjust.brbrThe vehicle antenna mount thread size is 1 1/8 in-18. The black NMO mount includes 12 ft of RG-58A/U cable. A BNC Male connector is installed. The Laird black vehicle magnet mount is designed for use with Motorola-style mobile antennas up to 1000 MHz.