Turning insert with coated carbide grade with CVD multilayer coating (TiN/MT TiCN/Al2O3) and advanced Beyond post-coat treatment. KCK15 is a wear-resistant grade with balanced toughness for general milling of cast irons at higher speeds. Best results in dry but can also be used wet. inserts are the first choice for I.D. turning of all materials and O.D. turning on small to medium lathes. Available in ﬂat top and chip control geometries with both moulded and ground peripheries. Suitable for all workpiece materials.