Diamond Antenna K400 Series Trunk and Hatchback Mounts are deluxe, heavy duty mounts for your vehicle. These are among the strongest, most universal mobile mounts available. Diamond Antenna's 2-axis adjustment gives you the flexibility you need for the antenna mounting location, including trunk lid, hatchback, vertical door edge, and more. Diamond's K400 Series are recommended for large VHF/UHF or medium-size HF antennas. Features include: * No holes or drilling required * Rubber mounting pad protects mounting surface * Four set-screws ensure positive grounding and mount strength for larger antennas