Halex 90514 1-1/4" Clamp Connector, Zinc | Fits non-metallic cable #6/3 to #2/3 AWG flex cord 0.800 to 1.350 in Dia or SE cable 3 conductor or 3 #1/0 minimum. 3 conductor or 3 #2/0 maximum. With 1/2 in knockout. In a dry location, use to connect non-metallic sheathed cable to a steel outlet box or other metal enclosure. UL listed, meets CSA requirements.