Fdc Deep Depth 1-Gang Cast Device Box | Fastening | For Threaded Rigid Conduit and Imc | For Use With Threaded Metal Conduit and Imc | Installs Vertically Into the Bottom of Wood Structures for Hanging Threaded Rod | Provides a Hardened Bearing Surface, Creating More Uniform Torque Control and Load Distribution | Use With 11-in-1 and 10-in-1 Screwdriver/nut DriversFurbay Electric Supp