150 Watt Fresnel Tungsten Light A 1.97" (5.0 cm) Fresnel Provides Light Beam Angles of 42 in the Flood Position and 14 in the Spot Position at 15 Feet. Weights: Fresnel Head with Cable: 2.3 lbs., 1.0 kg. Mounting: Combination Spigot Type, 5/8" Diameter.