Conduit Combination Coupling; Installation Set Screw EMT to Set Screw Rigid/IMC; Trade Size 3/4 Inch; Constructional Feature Concrete-Tight; Material Zinc Electroplated Steel; Size 1-11/16 Inch; Standard Package 100; Approval UL (Canada and US); Used On Rigid and IMC Conduit; ROHS/TCLP Compliant; Applicable Standard Federal Specification A-A-50553, NEMA FB-1; Includes Tri-Drive Slot/Phillips/Robertson Head Screw