1999A, 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, centre cut, unequal pitch, with protective chamfer, number of teeth 4, 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.