Great for carving and sculpting, For use on wood rubber plastics foam fiberglass and silicone, Will cut with or against the grain, Burrs can easily be cleaned by brushing or burning off without damaging the needle-like teeth, RPM: 5 000 - 20 000, Shank: 1/8"", One Burr, Do not use on metal, Taper: 3/4"" x 1/8"", Bull Nose, SKU: PXTECH052