10 Inch reflector with a satin anodized interior with photographic black powder coated exterior. The UL listed ceramic socket is rated for 500 watts. The FL10 unit is equipped with an ECT 500 watt lamp, and a 5/8 inch aluminum stand adapter. Can also use the 26-watt spiral fluorescent lamps or the 55-watt spiral fluorescent lamps. Angle of coverage is 30°.