The Edelbrock Aluminum Fuel Rail is completely CNC machined from aluminum extrusions, polished then hard anodized for use with fuels (including methanol). The aluminum fuel rail has 9/16 fuel passage, a flow-through design and 3/8 NPT fittings on both ends. This fuel rail includes a fuel regulator mounting at the end of the rail that can be used with stock or aftermarket regulators. The fittings and all necessary hardware are included and they are sold in pairs. Made from CNC machined aluminum extrusions It has a fuel passage of 9/16 Comes with 3/8 NPT fittings on both ends Has a clear anodized finish Includes fittings and all necessary hardware