[Fitment]High/low pressure dust cover for AC system refrigerant port, avoid sand or dust entering into the system. [Unique Design]Rubber sealing ring design inside, provides effective leakage prevention of refrigerant filling. [Direct replacement]Ideal air conditioning refrigerant charging port cap replacement, can replace or repair the old or broken one. [High quality material]Made of high quality ABS material for long durability, secure attaching, not easy to loosen. [Easy to Install]Easy 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