The PCTEL Maxrad BMATM-NC vehicle roof mount antenna installation hardware kit is a special application NMO mount for Motorola-style mobile antennas, 0 – 1000 MHz in thick surfaces. This brass permanent mount is for a 3/8 – 3/4 in hole in mounting surfaces up to 3/16 in thick.brbrThe PCTEL mobile antenna mount includes 17 ft of RG-58/U coaxial cable. Connector is not included. Thread size is 1 1/8 in-18.