FitmentHigh/low pressure dust cover for AC system refrigerant port, avoid sand or dust entering into the system. Unique DesignRubber sealing ring design inside, provides effective leakage prevention of refrigerant filling. Direct replacementIdeal air conditioning refrigerant charging port cap replacement, can replace or repair the old or broken one. High quality materialMade of high quality ABS material for long durability, secure attaching, not easy to loosen. Easy to InstallEasy to install, practical accessories for car airconditioning replacement and maintenance. Specification: Item Type: AC Refrigerant Port Cap Material: ABS Color: Blue Model: R134A Low Side Port Cap Diameter: Approx. 15mm/0.6in High Side Port Cap Diameter: Approx. 19mm/0.7in Package List: 15 x High Side Port Cap 15 x Low Side Port Cap