The Larsen NMOKHFUD25 vehicle roof mount antenna installation hardware kit is a special application NMO mount for high frequency Motorola-style mobile antennas 0-6000 MHz. Center pin is removable to function as a standard or high frequency mount. This nickel, copper and zinc alloy permanent mount is for a 3/4 inch hole in mounting surfaces.
The Larsen mobile antenna mount includes 25 feet of RG58/U dual shield cable. Order connector separately. Thread size is 1 1/8 inch - 18.