Sharpening stone (abrasive grinding wheel) for slicers, size 45 × 10 × 8 mm (diameter × thickness × centre hole). Wear part for the built-in sharpener assembly that restores the edge of the circular blade. Compatible with Noaw and Berkel slicers and models with the same dimensions. The coarse grit removes more metal and rebuilds the cutting-edge profile on worn or nicked blades: it is the first wheel in the sharpening cycle, followed by the fine grit. The wheels work as a pair in the sharpener assembly: keep both grits on hand and replace the stone once it is worn or glazed. Check the three dimensions (diameter, thickness, hole) on your machine before purchase: they determine compatibility regardless of brand.