OPEK AM-204-7C - Heavy Duty Lid Trunk / Hatch Back Antenna Mount - NMO
Heavy duty trunk lid - hatch back mount. Universal mobile mount. Two-Axis adjustment gives flexibility in mounting location. Mount possibilities include trunk lid, hatch back, vertical door, etc. Recommended for large VHF / UHF and medium size HF antennas. 16 mm, 5/8" hole. Has 17-foot of RG-58/U coaxial cable with PL-259 connector.
Installation note: Included is a small strip of metal that goes between the set screws and your painted surface to prevent unnecessary damage to you vehicle's paint. With that said, some antennas perform better when the set screws pierce the vehicle's metal achieving a better ground. Other antennas do not require this grounding method.