Pro Trucker CB & Ham Ground Radial Kit for Mobile Magnet Mount Antennas or Similar Easy install - unscrew the coil/whip assembly of your Wilson 1000 or 5000 antenna from the base, and screw this product onto the magnet base. Then, screw the coil/whip assembly right to the top of this device. Improve reception from any direction making the signal more evenly distributed with better ground radiation 6 heavy duty steel radial arms Also Improves Receive, allowing Better Copy of those Marginal Stations! Overloaded Mobile is an Approved Reseller of Pro Trucker Products