WIRE, CABLE & CORD | Domed Covers Provide Extra Wiring Space; Wiring Capacity: 0.5 Cu-in as Per Nec 314.16(a) | Internally Threaded Body With Externally Threaded Cover; Covers Have Pry Notches for Bar or Wrench; Explosionproof; Dust-Ignitionproof | It Has Set Screw for Locking Fixture Stem; Protects Fixture Against Wind and Vibration Damage; Dual Function - Conduit Outlet Box and Fixture Hanger; Can Be Wired at Work Bench; for Added Protection Where Lighting Fixtures Are Subjected to VibrationFurbay Electric Supp