... edges holdout, 3.stronger flexibility than WA,1.vitrified grinding wheel cover various specifications of vitrified abrasives with the diameter less ... friable materials.5. Please mark in detail(such as max speed, port, special bond and so on), when the function or ... for the work pieces made of materials Chilled steel, High-speed steel, High-carbon steel,Chromium corundumPAPink,rose-red Sharp cutting ...