The Polyphaser CU-SPGP is a heavy duty grounding plate. Constructed of .062" copper plate, mounted on a piece of 1/2" painted fiber board. For mounting protectors and establishing a single grounding point for station equipment and lightning arrestors. Supplied with concrete anchors, two rolls of 1.5" x 10' copper grounding strap and two 12" x 18" copper sandwich bars.