Significantly better stock removal rate than conventional double cut burs. Saves time and money with very high stock removal rate on key materials. Comfortable working due to reduced vibration and noise. The highly accurate concentricity enables precise work free from chatter marks. This considerably reduces wear on the bur and power tool or machine. Pferd 28011 Carbide Bur Set, High-Performance Tungsten, OMNI Double Cut, 1/4 in Shank, Plastic Case, 8 pc