The KUU Diamond Stone - Coarse (Blue) is a high-performance tuning tool designed for sharpening and maintaining the edges of alpine skis and snowboards. Measuring 110 mm x 23 mm, this durable stone features a 240 mesh grit, making it ideal for aggressive edge work such as removing burrs, oxidation, or setting new edge angles before finer polishing. The coarse grit allows for fast material removal while maintaining precision, and its high-quality diamond surface ensures long-lasting performance. It comes conveniently packaged with a protective pouch, making it easy to store and transport, whether you're tuning at home, on the mountain, or in the shop.