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

100% brand new and high quality Material: diamonds+metal Color: Silver Color: Silver Features: Size: all shank diameter about 3mm, all grinding diameter about 6mm Total length: about 45mm Fit for: grinding, engraving, cutting lines, polished, hollow, jade carving, glass engraving,etc 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 Electroplated diamond grinding, it is a deal correction tool for processing of various molds, carbide, glass instruments, and jade carving Quantity:20Pcs Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!