Includes: three 15 oz. cans each containing 12 oz. of 134a refrigerant and 3 oz. of PAG oil with retrofit additives Stop Leak and O-ring conditioner. Patented/patent pending R-134a recharge hose with in-line gauge to check pressure as you refill the A/C system. R-134a high- and low-side retrofit fittings and caps. A third retrofit fitting for pre-76 vehicles and late model imports. EPA approved label complete bi-lingual instructions.