D'light Online HD36 Liquid Wax Disposable Clear Plastic 36 hour Emergency Candles Fuel Cells lamps - Set of 24 Made for commercial use only Case contains 24 disposable fuel cells Provide a consistent and dependable burn for an impressive 36 hours; Non-flammable liquid fuel safe and easy to use Eliminates thermal shock breakage commonly associated with the use of solid wax candles Made in the USA