PST-S, Plug Spinner Replacement Springs Peterson knows how rigorous a workout security professionals put our tools through. You expect our tools to be tough, and we make them the way you expect. Made from the highest quality spring steel, our Plug Spinner Springs will last far beyond any other available model. But we think farther out than any other manufacturer. Because we built our Plug Spinner to get decades of hard use, we offer our Plug Spinner Replacement Springs. Peterson is ready to meet your needs, no matter how far in the future! Replacement springs come in sets of 2.