carborundum grinding wheel 1. Sharp cutting, 2. good edges holdout, 3.durable, 4.stronger flexibility than WA, 1.carborundum grinding wheel cover various ... steel,Chromium corundumPAPink,rose-red Sharp cutting, good edges holdout, durableSuitable for form grinding, knives, Measuring instrumentGreen silicon carbideGCgreenOnly ... metallic and Nonmetallic material, i.e. carborundum grinding wheel