Fits standard 1/2" knockouts in electrical boxes or enclosures Connector designed to terminate MC, MCI-A, AC, AC/HCF, MCI-A HFC, MC-PCS,and RWFMC Die-cast zinc construction with nylon anti-short bushing For use in dry locations See Sell sheet for cable ranges. RACO’s new Double Barrel Push-in cable connectors make it easy to secure two or more metal-clad cable into boxes or enclosures. Simply insert a cable into the cable opening, then snap the box end of the connector into a box knockout, done! No tools needed for a secure assembly. Push-in connectors are perfect for new or old work and can be removed and reused.