FITS HOLLEY 2300, 2305 2-BARREL CARBS AND 4150, 4160 4-BARREL CARBS CHROME PLATED BRACKET for great looks and long life INCLUDES TWO STEEL RETURN SPRINGS DUAL SPRING DESIGN provides peace of mind as springs insure that throttle will return back to idle MOUNTS SECURELY TO FRONT CORNER OF CARBURETOR for proper alignment of springs to throttle lever Chrome Throttle Return Spring KitFits 2-barrel/4-barrel Holley Carbs