Aluminum block off cap with oring seal fittings AN male nut straight thread hexagon head port plug adaptor<br> Comes in different sizes. Pls contact us for more product information<br><br> FEATURES:<br> <li>More area and smoother transitions from the inlet to the outlet, resulting in less restriction than any other fitting line</li><li> Adapter Style: Male AN Hex Plug with O-Ring Adapter</li><li> Male AN Hex Plug with O-Ring</li><li> aluminum port plug adapter with O-ring seal is made of blue anodized aluminum construction and it is available for any plumbing situation and many custom applications</li><li> Manufactured from aircraft quality aluminum that is lightweight but durable.</li><li> Precision high performance fittings and adapters are fully compatible with gasoline and alcohol based fuels</li><li>Screws Into Female 6 AN Fitting<br><br> Notes:<br> Professional Installer Is Highly Recommend, No Installation Instruction Included.