Gateron Milky Red PRO Switches feature new, updated molds for the KS-3, a smoother keypress, reduced stem wobble, and a more vibrant stem color. It is also treated with the same lubing process as the KS-9 which will increase smoothness. The spring and milky housing utilizes the same material as the original KS-3X1 we know and love. Gateron PRO switches have less wobble, smoother feeling, and better stock sound.