Halex 21580 Duplex Connector, 3/8 Inch Zinc

In a dry location, use to connect two pieces of flexible metallic conduit, ac, mc or Non Metallic sheathed cable, to a steel outlet box or other metal enclosure when using only one knockout opening. fits 1/2 Inch in knockout. suitable for #14-2 thru #12 to 3 wire with ground Non Metallic sheathed cable, #14 to 2 wire steel armored cable, #14 to 2 wire with ground aluminum armored cable, 3/8 Inch in fmc, aluminum smooth sheath metal clad cable 0.410 to 0.500 in dia, aluminum interlocked metal clad cable 0.460 to 0538 in dia and steel interlocked metal clad cable 0.438-0.560 in dia.