Miniature Halogen Bulb, Bulb Base Type Right Angle Prefocus (P22d), Bulb Beam Angle Not Applicable, Bulb Dia. 1/2 in, Bulb Housing Glass, Bulb Shape T4, Color Rendering Index Not Applicable, Color Temperature 3600K, Incandescent Wattage Equivalency 51 W, Lumens 1,000 lm, Light Technology Halogen, Overall Length 3 in, Shatter- No, Trade Number HB4-9006HIB, Voltage 12V, Watts 55 W, Rated Life 500 hr, Bulb Finish Clear, Dimmable Yes, For Enclosed Fixtures No, Three-Way No