E-Z Lock® Insulated 90-Degree Snap-In Connector with Strap 1/2″
https://nsiindustries.com/product/e-z-locka-insulated-90-degree-snap-in-connector-with-strap-1-2/
Use Bridgeport 90-degree connectors to join flexible metal conduit to an electrical box or enclosure at a 90-degree angle. This connector features a steel cover and snap-in design for attaching to the knockout.