CNC-machined from 6061 billet aluminum, JEGS Carburetor Return Spring Brackets have adjustable stainless steel dual return springs. Offered in a clear anodized or completely polished version, multiple brackets are available to fit Holley 4150/4160, Edelbrock/Barry Grant square flange carbs, and Holley 4500 Dominator carbs. These brackets are for enthusiasts who want the ultimate race or street-driven vehicle with solid mechanical throttle linkage (they also work with linkage-type throttle stops.