(Pack of 5) Halex 20511 Clamp Connector, 3/8 in, Zinc | Fits 1/2 in knockout, non-metallic cable #14/2, 12/2, 12/3 AWG or 2 #14/2 AWG or flex cord 0.3 to 0.56 in Dia. In a dry location, use to connect non-metallic sheathed cable to a steel outlet box or other metal enclosure. UL listed and meets CSA requirements.