Zinc die-cast, 3/8" Knockout MC cable connector snaps quickly on | Crescent Electric Supply Company
RACO 3/8 in. Flex/AC/MC/NMSC Clamp-Type Connector Standard Fitting, 25-Pack 2661-J25 - The Home Depot
Topaz Corp 140 3/8 Inch Zinc Clamp Type AC/MC Connector | Cooper Electric
Sigma ProConnex 3/8-in Flexible Die Cast Zinc AC/Mc Connector Conduit Fittings (10-Pack) in the Conduit Fittings department at Lowes.com
3/8" Duplex E-Z LOCK® Connector
Topaz 350 Screw Clamp Duplex Connector 3/8-1/2 KO Die Cast Zinc
Bridgeport 566-DC2 3/8" Two-Screw, Strap Type MC/NM Connector, Zinc Die Cast. For connecting 14/4 to 10/3 Armored, Metal Clad Cable, or 14/2 or 12/2 NM-B Cable | Cooper Electric