Kit Includes: LF50 Caulking-gun style injector BigEZ™ R-134a hose/coupler and purge fitting LF500CS Leakfinder cordless, Violet light LED leak detection flashlight LF1800 8 oz (237 ml) BigEZ™ universal multi-dose A/C dye cartridge Services up to 64 vehicles Fluorescent enhancing glasses 3 AAA batteries Meets SAE J2297 Compatible with R-134a, R-1234yf and other refrigerants *R-1234yf systems require LF60 adapter (sold separately) .