... stability, good shape and color. Suitable for making tools for various stones, fine glass, ceramic and magnetic ... thermal stability, good impact resistence. Suitalbe for electroplated tools to grind and polish stones, ceramic, glass and ... like cemented carbide, ceramics, magnetic materials, glass, etc.MGD40, MGD30:Slightly friable abrasives. Suitalbe for economic electroplated tools.US Mesh60 ...