Effectively remove and impurities from, extend the service life of the refrigerator, and improve refrigeration efficiency Widely used for the maintenance and upkeep of household refrigerators, commercial freezers, and other refrigeration equipment 1 / 4Inch copper connector, suitable for most refrigeration systems Make of brass and precisely cast to ensures durability and efficient filtration Essential maintenance Set for refrigeration systems, providing complete solution for removal, backflow, and professional brazing in appliance repair scenarios