The PCTEL Maxrad NMO58AUCP vehicle roof mount antenna installation hardware kit is for Motorola-style mobile antennas 0-960 MHz. This NMO mount is a brass permanent mount for a 3/4 inch hole. The PCTEL mobile antenna mount includes 17 feet of RG58A/U cable and a crimp UHF connector. Thread size is 1 1/8 inch - 18.