1.Package Include: 100 x diamond grinding heads
2.Shank diameter: 3mm
3.With 50 cylinder shaped grinding heads and 50 bullet shaped,different sizes of heads.
4.The grinding rotary tools are suited for metals,glass,gem stones,castings,welded joints,remove rust and etc.
5.Widely used in precision polishing technology and burring,perfect grinding effect and long using life.