The Edelbrock #12412 Vacuum Secondary Spring Kit includes 7 springs that will fit on Holley 4150, 4150HP, 4160 series and various Demon Carburetors. Product Features:Steel MaterialFor Holley 4150, 4150HP, 4160; Demon King, Mighty, Race, Road, Sea, Speed; Barry Grant ClawIncludes Lightest To HeavySet of 7Made in The USA
