Marine Protection Systems™ Bronze Earthing Ground Plate Kit 12" x 5". Purpose-built grounding for marine applications provide a reliable underwater AC ground point critical for onboard electrical system safety. Ensuring safe AC protection to support effective GFCI/RCD operations & fault dissipation. Also appropriate for radio grounding and lightning plate operations. Bronze plates for hulls with stainless steel/bronze running gear: propellors, IPS and some pod drives. Includes multiple fastener lengths and necessary hardware for most hull types and installation requirements.