Features: -Electroplated ball diamond burr, it is a deal correction tool for processing of various molds, glass instruments, and jade carving. -Use with hanging mill, electric mill, engraving machines, electric machinery. -Diamond bits are favored for use with glass, tile, stone and hardened metals. -Suitable for carving, engraving, forming, drilling and filing/material removal. Specifcations： -High quality ball diamond burr -Shape: spherical -Grit: 20(Coarse) -Head Diameter:6mm -Shank diameter:3mm Package Content： 20pcs ball diamond burr.
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