These fittings make it easy to connect your AN hose and a pressure gauge to a female NPT port. They are ideal for attaching a fuel hose to a pump, regulator, or filter. All sizes have a single 1/8 NPT female port in the hex to accept a fuel gauge, warning light switch, or other adapter. You can even install our SCCA Fuel Sampling Port (Part No. 2542, sold separately) without cutting into your fuel line. Anodized aluminum.