External Thread (Male Head): 1/4 SAE Thread, Internal Thread (Female Head): 21mm. We'd like to settle any problem in a friendly manner. 1 x Tank Adapter. These tank adapters are service tools, can be applied to vacuum pump.
Brass Tank Adapter Vacuum Pump Adapter Fittings W21 To
Brass Tank Adapter Vacuum Pump Adapter Fittings to 1/4
Brass Tank Adapter Vacuum Pump Adapter Fittings /4\\\'\\\'
Brass Tank Adapter Vacuum Pump Adapter Fittings W2/4\\\'\\\'
Brass Tank Adapter, External Thread 1/4 SAE, Internal Thread
Brass 1/4 SAE to 1/2 ACME Air Conditioner Refrigeration Tank Adapter Fitting
