SP-650 Stone Grader

The SP-650 Stone Grader allows you to adjust the sharpening characteristics of your Original Grindstone or Blackstone Silicon. These grindstones have adjustable sharpening characteristics equivalent to between 220 and 1000 grit.

The fine side of the stone grader provides finer sharpening characteristics, while the coarse side is used to maintain the grindstone and reactivate the grit for more effective and coarser sharpening.


Part Number Description  
SP-650 Stone Grader – For grading the Grindstone from 220 grit to 1000 grit.