Conduit Grounding Bushing; Type Threaded; Trade Size 1 Inch; Wire Size 14 to 6 AWG; Lug Type Solid Copper; Throat Type Insulated; Diameter 1-1/2 Inch; Material Ball Burnished Mirror Smooth Die-Cast Zinc; Standard Package 250; Approval UL 514B, UL (Canada and US); Used On IMC/Rigid Conduit; Applicable Standard Federal Specification A-A-50553, NEMA FB-1; Insulator Material Plastic; Insulation Temperature 150 Deg C