Turning insert with a tough carbide grade with a moderately thick TiN-MT-TiCN-Al2O3 coating. For heavy roughing of carbon, alloy and stainless steel. The substrate coating combination provides unbelievable toughness and operational security allowing high metal removal rates even in most demanding interrupted cuts. 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.