HDE 12 LED Blacklight Flashlight UV Ultra Violet Leak and Stain Detection Perfect handyman tool to detect leaks | Helps identify oil, antifreeze, freon, A/C refrigeration leaks, and glass repair inspection Great household item to have for dog and cat stains, scorpion illumination, even track deer blood trails when hunting Feel at ease while traveling by inspecting hotel rooms and beds for stains or fluids Makes inspection easy for antiques, forgeries, money, document verification Reads invisible fluorescent inks, hand stamps from bars & clubs, and mineral lighting and identification