MICRO cut tungsten carbide burs are specifically designed for finishing and are used in areas where mounted points are often used. They offer a higher stock removal rate and produce a high surface quality, particularly when compared to conventional double cut burs. MICRO cut burs also operate with low vibration and little noise, they maintain their geometry over their entire service life, and they work in both manual and machine applications. MICRO cut burs can machine almost all materials up to a hardness of 940 HV (68 HRC). Ball-shaped bur, shape D.