20Pcs Diamond Grinding Head Burr BitSet Rotary Tool Needle Point Engraving Accessories 3mm for Stone Glass Carving Drill

Features:20Pcs 120 Grit Diamond Burr Set Drill Bits Set For Rotary Grinding Hand Tool Set For Woodworking Electrial New20 Pcs different heads grinding bits are included.Need to be used with electric mill/hanging mill/bench mill.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 engravingElectroplated diamond grindingVarious shapes and sizesSpecifications:Material: DiamondShank Diameter:3mmThe Head Diameter:6mmTotal Length:45mmParticle size:120 gritPackage included:1Set Electroplated Diamond Grinding Burr Drill Bits(20Pcs)