1999AZ, Type N, K10-20F, solid carbide, TiAlN coating, uneven angle of twist 35/38°, angle of cut 9°, cutting tolerance h10, weldon flat (HB), shank tolerance h6, long, unequal pitch, with protective chamfer, number of teeth 4, axial internal cooling, DIN 6527L Application Roughing-finishing end mill, for roughing and finishing with the same tool. Higher material removal rate due to optimized cutting geometry. Properties The uneven angle of twist reduces active vibrations. Secure chip removal and improved service life due to internal cooling.