The Arctic Air for R12 systems is a high-efficiency refrigerant for your air conditioning and heat pump system. The 3 x 4oz cans provide a convenient amount for refilling your R12 system, making installation and maintenance easier. This AC booster and drying agent combination ensures a return to optimal performance, ensuring you don't have to deal with issues caused by low refrigerant levels or contamination. Save time and money on energy costs with this reliable and efficient refrigerant solution for R12 systems.