This is a Stainless Steel Radial Plate designed to be mounted on the same one inch post that you would use to ground mount our antenna. The Plate is 9 inches in diameter and has 20 points to connect radials. The Radial Plate comes with ten 9 foot radials. The radials lay out does not need to be in a perfect spoke pattern or have to be straight (see below), the lay out can be in any pattern (to work in your mounting location) although the radials should not cross each other. The radial plate should be mounted as close to the ground as possible and your antenna should be mounted as close as possible to the radial plate