Arlington 4141107ST 3/4" Snap²It Duplex Connector, Flex/AC/MC

Stop wasting time with set screws, locknuts, and clamps. Instead, use Arlington's SNAP2IT line of connectors for quick and easy installations. The tool-less design accepts many cable types, simply snap the cable into the fitting and snap it into the box. That is all there is to it. The fitting is zinc die-cast for strength and longevity and is cULus listed. Fits a 3/4" knockout and supports two cables ranging between 0.525"-0.690" each.