The Impact Soft and Natural 4 Socket 3 Light Kit was put together to help image makers who need a lightweight setup for a wide variety of subjects. The three included Impact 4 Socket Fluorescent Fixtures accept lamps up to 50W and have built-in tilting brackets and 5/8" receivers for the included 6.0' light stands. Instead of a speed ring, these lights have four receptacles around the head that accept the poles from the included 20 x 27.5" softboxes. The kit includes 12 digital-friendly CFL fluorescent lamps with E26 screw-in bases and a daylight Kelvin temperature of 5,000. It all fits in the provided nylon carry bag.