Speedmaster Fuel Rails are designed with a large internal diameter for increased fuel volume to protect your fuel injectors, distribute fuel, and increase horsepower. Constructed from high-strength, aircraft grade aluminum with a blue anodized finish, these fuel rails deliver performance with a show car quality appearance.Compatible for use with Speedmaster, Procomp Electronics, Edelbrock, Professional Products, Holley and similar intakes; and Gas, ULP and Premium Fuels.