Electrical Metallic Tube, Communications Wiring;Computer Power Circuits and Any Other Designated System;Data Transmission;Health Care Dedicated Circuits;Trace Fire Alarm Application, Black (Tape) Color, 1.610 In;40.89 MM Conduit Inner Diameter, 1.740 In;44.20 MM Conduit Outer Diameter, Electro Galvanized Finish, 10 FT Length, Made In Usa, Flat Rolled Steel Material, 10 CT Package Quantity, Corrosion Resistant Special Features, Ansi Nema Standard;File #E7465;Ul 797;Ul Standard Standards Met, 1-1/2 In;41 MM