Sunlite 03642-SU MP70/U/MED 70 Watt Metal Halide Protected for Exposed Fixtures ED17 Light Bulb, Medium Base, Clear 70-Watt; 5000 Lumens 15000 Hour Average Lamp Life ED17; Clear Finish Medium Base; 5-4/9-Inch MOL. MP70/U/MED Needs HID Ballast to power on