Edelbrock 1994 Q-Jet Carburetor Step-Up Springs - Set of 4 Springs help in supertuning your Quadrajet Helpful for varying loads and conditions Sold as a set of 4 Size of the springs: gold (4" Hg), orange (5" Hg), black (6" Hg), and yellow (8" Hg) It has the following springs: Gold (4 in. Hg), orange (5 in. Hg), black (6 in. Hg), and yellow (8 in. Hg)