The KME sharpening stone thickness compensator provides quick, easy and precise angle adjustment when using different-sized sharpening stones. A thick sharpening stone decreases the sharpening angle compared to a flatter sharpening stone. This has a negative effect on the sharpening result because you no longer sharpen the entire edge. To make sure that, regardless of the thickness of the sharpening stone you use, you use the same angle KME developed this practical thickness compensator. You can easily attach the compensator to the KME Precision Knife Sharpening System, Diamond Stone Kit or the KME Precision Knife Sharpening System, R.P.S.H. Combo Kit. Check out the video that accompanies the product photographs for instructions on how to attach the compensator to the sharpening system.