Petzl AntiSnow Crampon Plate - M10 Spring 2009 The M-10 Anti Snow by Petzl are plates placed at the base of your M-10 crampons designed to avoid the build-up of snow between the points. Features: Extra-flat: does not reduce the projection of the points. Adjusts perfectly onto each part of the crampon front and rear. Robust: highly resistant to tearing. Each model of crampon has an Anti snow designed to fit.