I run a race car shop and have fitted thousands of AN fittings (no exaggeration). have used. The reverse thread on the sleeve prevents the line from falling out when the fitting is installed. I had no problem using these fittings with two different brands of AN hose.
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16Ft Vincos AN6 Nylon & Stainless Steel Braided Fuel Hose + 6An Fitting Kit For Leak-Free Oil & Gas Transfer
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