RFS GKFORM60-12 Grounding Kit, Pre-formed Copper Strap, 1.5m (60") for 1/2" Cable. Radio Frequency Systems standard ground kits feature premium lightning strike protection that is designed to withstand strikes in excess of 200kA. The preformed copper strap and inclusion of 1/4" and 3/8" 2-hole lugs offer easy installation and guaranteed protection.