FJC 9165 R134a Kwik Seal Leak Sealant - 4 oz. Includes an easy to use hose with R134a quick coupler - no other tools required Kwik Seal Stop Leak will not damage ac recovery/recycle equipment Use in R134a mobile A/C systems Application: one can per vehicle A/C system 4 Ounces aerosol with 2 ounces of R134a and 2 ounces of Kwik Seal