Dremel 7144

For fine detail work, cutting, engraving, carving, touch-up and finishing. Use on wood, jade, ceramic, glass, hardened steel, semi-precious stones and other hard materials. Bits are covered with diamond particles.Dremel 7144. Rotational speed (max): 25000 RPM. Shank diameter: 3.2 mm, Length: 46 mm, Diameter: 2.4 mm. Quantity per pack: 2 pc(s)