DMT® Diamond Stones are preferred as standard equipment for professionals worldwide. DMT® stones are guaranteed flat, and last — they give the winning edge to skis, snowboards, speedskates, iceboats and luges. Only DMT® quality can manage the extreme hardness of today’s edges. More importantly, they can quickly remove even the super hard edge burrs that result from rock damage and man-made snow. Save time, effort, and steel file costs by using DMT® diamond Stones.