2 pack, 3/4", Non-Metallic snaptite connector, indoors only, snap in, fits Non-Metallic cable #14/2, #12/2, #12/3, AWG or 2 #14/2 AWG or flex cord .300 to .560 inch diameter 3/8", 1/2 knock out, in a dry location, use to connect Non-Metallic sheathed cable to a steel outlet box or other metal enclosure, 3/8 inch size fits 1/2 inch knock out, snap in design allows for quick & easy installation, no locknut required.