Grounding block used for CATV subscriber grounding application. Unique Locking Tab designed to facilitate the installation of the F81 connector. New oval slot permits upgrading with various brands of 2, 3 or 4 way splitters, simply by using the SCO9 splitter ring nut for mounting. Quick insert and wrap locking hole to accept up to #10 AWG ground wire. Made of G90 galvanized steel with a yellow-chromate overcoat. Supplied with stainless steel green grounding screw and a stainless steel screw to bond steel messenger wire.