Rugged aluminum ballast housing finished in dark bronze, Ballast / capacitor compartment optimizes operation and efficiency, Vertical aiming quadrant with repositioning stop for precise aiming, Die-cast socket housing with silicone gasket to keep out contaminants, Spun-aluminum reflector produces repeatable beam, 1/8" tempered, heat and shock-resistant glass lens, 1000W metal halide or high pressure sodium, Five distribution types for maximum field beam illumination