This fiber optic star ceiling kit, including 1pc 10W dual port LED light engine with 600 mixed diameter fiber optic cables to make vivid star ceiling field. If you would like to create a ceiling with three different sizes of stars and cover a about 150 square feet area, we suggest that you purchase this model. Specification 1pc 2 5W dual port LED light engine model Two bundles: 220 0.75mm fiber optic cables, 70 1.0mm and 10 1.5mm end lit fiber optic cables at 16"4" length which can cover 150 sq ft. Remote can power the unit on/off, start/stop the wheel and up/down dim 8 levels. Most kits on the market don"t offer the dimming feature and something customers frequently request. Because it uses LED technology, you won"t have to worry about changing out the bulb as LED"s have a very long life and are very energy efficient.