Specification: Light color: purpleMaterial: Aluminum AlloyBattery: 3* AA battery (not included)Switch: the body of the press switchUsage:1.The usage is the same as the frozen oil, join in low essure filling mouth, turn on the A/C switch (double bellows vehicles must be open air conditioning switchof front and back)2.The fluorescent leak agent can loop in each section of the refrigerant piping.3. A/C system running for 10 minutes,4. Close the A/C with the engine. For low voltage line pressure balance and high pressure, make the low pressure pipeline leakage of refrigerant pressureFeature:-- 3-in-1 fluorescent leak detection set-- Wide range of applications--Accuracy-- Easy to use-- Long-term effective-- pollution-free, environmentally friendly--Some cars use for a long time, some parts is aging, so that it occurs penetration. --Some leakage place by conventional methods difficult to detect.--Fluorescent oil coupled with fluorescent lamps, it is easy to check out the place leaksNote:1.No Instructions Included.The Kit not including the battery, you need to buy it for yourself.2.Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)3.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.4.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.Package:1* 2.5ml Fluorescent Oil,1* 51 LED Leak Detection Flashlight1* Leak Glasses 83102463218577