Dual Ground One Ground Lug Block 2 Port Deluxe Antenna HDTV Satellite Dish Coax Cable Outdoor Aerial LNBF Receiver Signal Lighting Ground Spike Voltage Protector With End Caps This ground block is used to ground two coax cables from a satellite dish or outdoor antenna using 1 ground lug. Used to ground and help protect fragile electronics such as satellite receivers and televisions from damaging lightning strikes and power surges Dual grounding block with 2 end caps