... and thermal stability, good shape and color. Suitable for making tools for various stones, fine glass, ceramic and magnetic materials ... and thermal stability, good impact resistence. Suitalbe for electroplated tools to grind and polish stones, ceramic, glass and ... etc.MGD40, MGD30:Slightly friable abrasives. Suitalbe for economic electroplated tools.US Mesh60/8080/100100/120120/140140/170170/200200 ...