This product uses first-class diamond powder and is made with precision
Uses: used for grinding of molds, grinding of inner holes, fine workmanship, reliable quality, suitable for electric grinder, engraving machine, electric machinery supporting assembly, mainly used for engraving glass, jade, repairing abrasive tools and hard objects .
Shape: grinding needle
Granularity: 120 (mesh)
Outer diameter: 3.175mm
Shank diameter: 3mm
Total length: 45mm
20/30pcs Diamond Burr Bits Drill