OVERVIEW: 4in 400 Rally Halogen feature a 55w H3 Halogen Bulb in a spread beam pattern, high quality stainless steel housing, precision polished reflectors and hard coated Lexan lens, with protective stone guards. Light does include wire harness. PERFORMANCE HALOGEN AND PRECISION OPTICS: 4in Rally 400s deliver 392 lx @ 10m of light output with a beam distance of 396 meters. Powered by 55W H3 Halogen bulbs and KC's precision designed reflectors, providing extreme light output at high speeds and long distances. AVAILABLE BEAM PATTERN AND ADVANTAGES: Spread Beam - Provides a balanced wider beam of light that increases peripheral visibility, as well improved forward facing light for an increased range of visibility. ADJUSTABLE MOUNTING FOR ACCURACY AND PRECISION: Two Axis mounts allow users to easily adjust and aim the Rally 400s, for consistent and precise beam output. COMPACT SIZE AND VERSATILITY: Rally 400s feature a compact 4in profile with a rugged steel housing makes these lights idea for front bumpers on trucks, Jeeps and SUVs, especially on vehicle locations with limited space.