Turning insert with advanced PVD grade with hard AlTiN coating and fine grain unalloyed substrate. The new and improved coating improves edge stability with wide range speed and feed capabilities. The KCU25 grade is ideal for general machining of most steel, stainless steel, high temperature alloys, titanium, irons and non-ferrous materials in a wide range of speeds and feeds with improved edge toughness for interrupted cuts and high feed rates. 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.