Mc/ac and Non-Metallic Sheathed Cable Support | Cable Support | Use Through Knockout to Connect Box to Conduit Coupling; Use With a Locknut to Connect Two Boxes Side by Side or Back to Back; Use With a Locknut to Connect Fixture Housings in Continuous Runs; Rigid Conduit Threads (Nps) | Wide Range Grips Are Recommended for Use in Wiring of Enclosures, Power Boxes, Machine Tools, and Power Centers. Includes Insulated BushingFurbay Electric Supp