Easy to Use and Install. 2 screws are included(They are individually wrapped in a small plastic bag to prevent the grounding block from scratching), connect the grounding block female to other male F-pin coax connector. No Signal Loss, 3 GHz, high grade brass and gold center conductor, UV resistant rubber grommets, and a high quality alloy body, all designed for high frequency and strong signal. Wide Range of Applications, Cable tv grounding block intended to ground incoming F-pin cables to your TV, RV, VCR, cable box, cable modem, off-air antenna, HD antenna, and many more devices. Long-lasting to Use, The weather boots on the connections are easily and non-destructively removable by simply rotating them off the female F-connectors. Quick and easy to install.