Female Thread Size --- Approx 21mm / 0.8in. W21 to 1/4SAE refrigerant filling adapter, with good sealing performance.
Air Conditioning Adapter --- Suitable for R32, R134A, R407A, R404A, R422A, R422D, R507, R407C, R417A, R437A, R407F refrigerants.
Male Thread Size --- 1/4SAE Thread. Support 1/4SAE male thread connection, stable performance, no gas leakage.
Easy Installation --- Easy to install and disassemble, stable performance. Professional manufacturing, and reliable, suitable for refrigerators and air conditioners.