3-1/2" Knockout Squeeze ConnectorSome items may require minimum order quantities which can be changed in your shopping cart. Description Squeeze Connectors Zinc die cast, two screw, 3 1 2" knockout squeeze connector with round end stop. For Flex, AC, MCI cable. Concrete tight when taped. End stop diameter: 3. 478 Features Features Used to Terminate Flex, AC, or MCI to a 3 1 2" Knockout Into a Box or Enclosure. Made in the USA. Specifications PRODUCT SPECIFICATIONS Trade Size 3 1 2"