UNILETS Fixture Hanger, Size: 3/4 IN Fixture Stem, Material: Malleable Iron, Lamp Type: HID, Incandescent And Fluorescent, Finish: Triple-Coat (Zinc Electroplate, Chromate And Epoxy Powder Coat), Standard: Class I, Groups A, B, C And D, Class II, Groups E, F And G, Class III, For Use With Threaded Metal Conduit