Sigma Electric 44655 3/8-Inch Snap Lock NM/SE Connector, 2-Pack Go to amazon.com Related posts Top recommendation for romex connector tool FeatureDie Cast ConstructionNo locknut for faster installationFits 14-2 thru 12-2 CableFits 0.290" thru 0.450" Flexible CordcULus Listed Description3/8" Snap Lock Non Metallic Connector, Sigma has been a trusted manufacturer of metal conduit fittings and weatherproof products for over 25 years.