Wobble Light D05197 Replacement Metal Halide Bulb for WL400MH Work Light

' HID Lamp, Lamp Type Metal Halide, Bulb Shape BT28, Base Type Mogul Screw (E39), 400 Watts, Bulb Color Temp. 4000K, Lumens 40, 000, Max. Overall Length 9-3/4 In., Shatter-Resistant No, Bulb Designation M400X/U/BT28, Metal Halide, Color Rendering Index 65, Bulb Finish Clear, Average Bulb Life 15, 000 hr., Bulb Power Source Requires Separate Ballast, Bulb Housing Glass, Bulb Min. Starting Temp. -22 Degrees F, Bulb Start Type Preheat, ANSI Code M59 '