IMC/Rigid Conduit Coupling; Type Set Screw; Trade Size 1 Inch; Diameter 1-3/16 Inch; Length 2-11/16 Inch; Material Zinc Plated Malleable Iron; Constructional Feature Concrete-Tight; Standard Package 100; Approval UL 514B, UL (Canada and US); Used On IMC/Rigid Conduit; ROHS Compatible; Applicable Standard Federal Specification A-A-50553, NEMA FB-1