The double buckle is deepened to prevent falling off and leakage. Extra-thick rubber gasket in the connector prevents leakage,Lengthening the hose makes it easier to place the washing machine. If you are a female faucet, first insert the gasket into the faucet, then use an Allen key to screw on the Male adapter, and then screw on the 55/64" (22mm) female connector (need to put a rubber gasket).
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