Size: The thread size of 6AN is 9/16-18UNF. 2x 6AN 5/16" Hose Barb Adapters Fitting. Easy installation: Just push the barb end of the fitting into the hose. suitable for fuel system such as fuel hose line fitting, fuel pump, fuel filter and can work with all kinds of fulid-oil, Desiel, Petrol, Water.
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