PCTEL's NMO-60-300-B1-N is an NMO mount with 25' of RG-58U solid center cable with a BNC male connector attached.
Part # matrix: NMO = Mount style > 60 = Cable style (RG-58U) > 300 = Cable length (inches) > B1 = Connector style (BNC (M) crimp) > N = connector is loose in the package.