Intersystem Bonding Connector, 2 to 6 AWG, Bronze 4 Circuits
https://nsiindustries.com/product/intersystem-bonding-connector-2-to-6-awg-bronze-4-circuits/
Polaris grounding and bonding products provide flexible solutions for a wide range of grounding and bonding applications in the field. Use intersystem bonding connectors to bond power and communication (phone, cable and satellite) grounding systems.