This brush is a must for cold snow conditions. Extremely fine, soft steel bristles reach into the bottom of the skis structure to pull out the wax that your regular brushes cannot get out. Very important for achieving fast results in snow temps below -10C with dry, fine, aggressive snow. Use on a cold ski and when the snow is -10C or colder, before applying overlay. Our competitor's version is spec'd with a much larger bristle diameter, the equivalent of using the Holmenkol Fine Brass brush.