Strap-Type Connector, 3/4″, Die Cast Zinc with Two Screws
https://nsiindustries.com/product/strap-type-connector-3-4-die-cast-zinc-with-two-screws/
Use the Bridgeport 3/4″ Die Cast Zinc Strap-Type Connector with Strap, two Screws and 3/4″ KO to connect a single round service entrance cable to a box or enclosure. The connector has an OD range of 0.680 ” to 0.800″.