The Spectre Dual Feed Fuel Line with red and blue fittings was designed to fit Holley 4150 and 4500 style carburetors, but is fully adjustable from 8 inches to 10 inches to fit the different model Holley carburetors including the Dominators. Featuring machine flared ends on 3/8 inch diameter fuel line with red/blue magna-clamps, this dual feed fuel line includes 0-15 PSI fuel pressure gauge and is triple chrome plated in #304 grade stainless steel. It's the ultimate in fit and function.