20pcs 3mm Shank Diamond Grinding Burr Drill Bits Sets for Rotary Tools

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Description: 20pcs 3mm Shank Diamond Grinding Burr Drill Bits Sets for Rotary Tools Specification: Color: Sliver Material: Diamand+metal Size: All shank diameter about 3mm, all grinding diameter about 6mm.Total length about 45mm. Weight: 71g Fit for: Grinding, engraving, cutting lines, polished, hollow, jade carving, glass engraving,etc.   Features: Good workmanship, reliable quality, suitable for hanging mill,  electric mill, engraving machines, electric machinery and supporting assembly. Mainly used to polish glass, jade, repair abrasive and other hard objects...
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