Universal D-Series 3″ 15.8W Spot Beam Green LED Light (20125) by Rigid Industries®. 1 Piece, 4-LED. Black housing. 9-36V. These lights have the Rigid Industries patented Hybrid optics system that is the most powerful and efficient LED optics system available on the market. Utilizing a combination of lens and reflector, this Hybrid optics system captures the maximum amount of light emitted from the LED and projects it exactly where you want it.