6pcs Tungsten Carbide Rotary Burr Wood File Metal Engraving Grinding Bit 6mm Shank

Process all kinds of metal (including hardened steel) and non-metal (such as marble, jade, bone).

Machining hardness up to HRC70.

For most work, it can take place of small grinding wheel with shank,and no dust pollution.

Easy to use, safe and reliable, labor-saving.

Good processing effect, high efficiency, long service life.