Lamp, Shatter-Resistant, Metal Halide, M250 BU/ED28 (PK X 6), 250 Watts, 22000 Initial Lumens, 360 Deg Beam Angle, 4200 K, 65 CRI, Clear Finish, M58E Ballast, ED28 Shape, 3.5 IN Dia, 8.3 IN Long, ED28 Bulb, Mogul (E39) Base, 10000 Avg Life Hrs, PFA Coating