Sharpening stone (abrasive grinding wheel) for meat slicers, dimensions 50 × 9 × 6 mm (diameter × thickness × center hole). It is the wear part of the built-in sharpener assembly: mounted on the shaft, it restores the edge of the circular blade at every sharpening pass. Compatible with Bizerba slicers and with models that use this size. The coarse grit removes more metal and restores the edge profile on worn or nicked blades: it is the first wheel in the sharpening cycle, followed by the fine grit for finishing. The two wheels work as a pair in the sharpener assembly: for proper sharpening it is best to have both grits and to replace the stone once it is worn or glazed. Before purchasing, check the three measurements (diameter, thickness and center hole) on your machine: these are the figures that determine compatibility, regardless of the slicer brand.