Bridgeport 249-DC 4-Inch Set Screw Coupling, Rigid/EMT Conduit Coupling, Set Screw Installation, Ball Burnished Mirror Smooth Die Cast Zinc, Trade Size 4 Inch, Diameter 5 Inch, Length 5-1/4 Inch, Concrete Tight, Approval Ul, Csa, Standard Package 6, Used On Rigid Conduit, B[R] Brand, Number Of Screw 4