With one squeeze, the Bright Solutions Pro-Shot Injection System, No. 130221, injects a pre-measured amount of dye with no over-injection.The 8-oz cartridge of Stay-Brite Universal A/C dye services 64 vehicles. This injection system includes R-134a and a R-12 injector hose. It SAE certified and OEM approved. Additionally, the Pro-Shot Injection System Kit (No. 140845) includes the Star-Brite LED Leak Detection Lamp, the Maxi-Brite UV Fluorensence Enhancing Glasses, a 2 oz of Dye-Out Cleaner, a purge fitting and dye-installed service stickers.