Grivel Antiballing Plate Crampon Add On Spring 2009 The Antiballing Plate by Grivel, with its patented in.activein. anti-bott is the most effective device made to prevent snow from balling-up underfoot. The injection-molded plate features an egg-shaped bubble that constantly flexes up and down to keep snow from stalling in the crampon frame and freezing to its rails. The new style of plate is available for G10, G12, G14, Air Tech and Air Tech Light crampons. The older style black Latex which functions in a similar manner albeit less effectively is available for the 2F and Rambo crampons.