Interdynamics IDQ R12 to R134a Recharge And Retrofit Kit (Three 11 oz. cans) Includes three cans of R-134a high mileage with conversion oil and additives specially designed to increase life of older compressors Comes with reusable recharge hose with low pressure gauge handle and temperature dial indicator for proper charging and accurate fill Has retrofit valves needed to convert the high and low pressure ports from R-12 to R-134a and EPA approved label 33 ounce total fill three 11 ounce cans to replace lost refrigerant All in one solution; retrofit kit for 134A and 401G and 405B refrigerants