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 Material
- For Holley 4150, 4150HP, 4160; Demon King, Mighty, Race, Road, Sea, Speed; Barry Grant Claw
- Includes Lightest To Heavy
- Set of 7
- Made in The USA