Hey DIY mechanics and pros! Tired of guessing where those pesky AC leaks are coming from? This UV leak detector kit makes finding leaks so much easier - and you get TWO complete sets, which is perfect for keeping one in your home garage and one in your work toolbox, or sharing with a buddy. Each flashlight packs 14 bright LED lights that put out serious UV power to make those leak stains glow bright yellow-green. The aluminum shell feels solid in your hand and should hold up to shop use. The kit comes with 4 pairs of UV protective glasses (because safety first, folks!) made from quality PC material that's comfortable and durable. Here's how it works: you add fluorescent dye to your system (not included), run it for a bit, then shine these UV lights while wearing the glasses. Any leaks will light up like Christmas, showing you exactly where the problem is. But wait, there's more uses than just AC work! These lights are great for checking currency authenticity, driver's licenses, finding pet urine stains, or detecting leaks in hydraulic systems, lubrication systems, transmission, fuel systems, and cooling systems. The black bags are perfect for storage and keeping everything organized. Just remember - batteries aren't included, so grab some AAA's before you get started. Whether you're a professional mechanic or a weekend warrior working on your own cars, this kit will save you so much time and frustration tracking down those annoying leaks. No more guessing games - see exactly where the problem is and fix it right the first time!