Features & Benefits For use in R-134a and R-1234yf systemsSuper concentrated dye detects leaks quickly, saving time and moneyAdded friction modifier and anti-wear additive improves efficiency and reduces wearAntioxidant stops acid formation and prolongs oil lifeCartridge works exclusively with the Spotgun Jr.™ injection systemUnit Size: 0.25 oz/7.5 mlMax. Applications: 1 vehiclesQuantity: 6