... safety6)Self purge feature can be used to purge The moisture, contaminants and excess refrigerant from the system after each use7) ... and cooling fan for maximum performance in even harshest conditions8) Filter/drier removes both moisture and acid from the refrigerant9) Plastic ... Ergonomic and compact design makes it easy to carry and use. Refrigerant Cat III:R12,R134a,R410c,R406a,R500Cat IV:R22,R410a, ...