The CERTIFIED AC PRO AUTO AIR CONDITIONER ADAPTOR VALVE CONVERTS AC R12 To R134A by Interdynamics is a universal fitment product with a 60-day manufacturer warranty. This adapter valve converts AC R12 to R134A, ensuring compatibility with a wide range of vehicles. Designed for ease of installation, this model (VA-1L) is a reliable solution for those looking to upgrade or repair their air conditioning system.