Set-Screw Connector, Size: 1 IN, Connection: Male Threaded X Set-Screw, Material: Malleable Iron And Steel, Length: 1-3/4 IN, Thread Length: 0.56 IN, Diameter: 1.63 IN, Standard: UL 514B, NEMA FB-1, used to secure and terminate rigid metal conduit and IMC to enclosures