Features and Benefits: Disposable cartridges that are easy to load without fumbling or messy spills Continuous trouble-free leak detection with just one cartridge OEM Approved and SAE-J2297 certified A/C dye 4 oz. (120 ml) cartridge services 32 small A/C systems or 16 regular A/C systems Service Stickers included Disposable cartridges that are easy to load without fumbling or messy spills Continuous trouble-free leak detection with just one cartridge OEM Approved and SAE-J2297 certified A/C dye 4 oz. (120 ml) cartridge services 32 small A/C systems or 16 regular A/C systems Service Stickers included The One in. universal replacement cartridge!