Straight Squeeze Type Malleable Iron BX-Flex Connector for Metallic Conduit, AC and MC Cable (250, 1/2") - - Amazon.com
Connectors and Couplings | AC/MC Fittings | Eaton
Zinc die-cast, 3/4" Knockout MC cable connector snaps quickly on | Crescent Electric Supply Company
Direct burial rated Mighty-Seal® jacketed MC cable connector. Cor-Shield® Polyolefin coated zinc body. Concrete tight, raintight and listed for direct burial.
Arlington 404010AST 1/2" Snap²It Insulated Duplex Connector, Flex/AC/MC, .405 to .612 | Independent Electric
Sigma ProConnex 3/8-in Die Cast Zinc Set Screw Spacer Conduit Fittings (10-Pack) in the Conduit Fittings department at Lowes.com