Consists of two fluorescent lamps and one driver circuit. Lamps are extremely bright, produce very little heat and have a life of over 15,000 hours. All lamps have a diameter of .160′ and require a constant 12V DC source. Lamps should not be run with less than 12V.WARNING: This product can expose you to chemicals including Diethylhexl Phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov