Aluminum 0.25” x 6” x 6” Ground Radial Plate for GP/Vertical Antenna, 4Sq… Center hole is 2.50” This plate highly recommended accessory for any vertical to organize your ground radials. It also provides a great ground connection for your coax, balun, or remote tuner. You can also hook up two radials on each bolt. Includes : 0.25" x 6" x 6" Aluminum plate with 2.50" center hole, and 32 x 1/4" holes for radials                 32  x zinc plated 1/4 x 1 hex bolts,                32 x zinc plated nuts                64 x washers                32 x lock washers                to secure your ground radials to the plate