Product Features

•  Ball shape head, diamond grinding tools for diamond and jade carving.
•  These are 120 grit and 3.0mm shank.
•  Diamond burr tools for grinding, engraving, cutting lines, polishing, carving, glass engraving.
•  Electroplated diamond grinding.
•  Need to be used with electric mill/hanging mill/bench mill.
•  Perfect for plastic, wood, glass, metal, ceramics, tile, marble, granite, stone, and many other materials.
•  20 Pcs different heads grinding bits are included, Various shapes and sizes.