... vitrified abrasives with the diameter less than 900mm and the thickness between 3mm-310mm 2. Good flexibility ... glass, vitrify, gem, agate, honing cylinder sleeve and other hard friable materials.5. Please mark in ... help with you to develop new-style abrasive tools, and to tackle a key problem7.Wheel should ... shape, size, abrasive material, grain, grade, , and speed grinding wheel for woodworking tools