1、W21 to 1/4SAE refrigerant filling adapter, with good sealing performance. 3、Suitable for R32, R134A, R407A, R404A, R422A, R422D, R507, R407C, R417A, R437A, R407F refrigerants. 4、Support 1/4SAE male thread connection, stable performance, no gas leakage.
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