This Estella deburring stone is a direct replacement for the one that came standard on your Estella SL series meat slicer. It is compatible with SLM12, SLM13, SLA13, and SLA13S meat slicers. This deburring stone removes small imperfections from the blade in your machine. If burrs are not removed, it can impact the cutting ability of your blade. Use this stone to ensure that your blade will easily and cleanly cut through deli meats and cheeses. If your original deburring stone is worn out or damaged, replace it promptly to ensure efficient operation of your meat slicer.