Top notch threading insert with KCU10 grade is used for finishing to general machining of most workpiece materials at a wide range of speed and feed capabilities. Excellent for machining most steel, stainless steel, cast irons, non-ferrous materials and super alloys with improved edge toughness and higher cutting speed/feed capability. It has PVD coating over a very deformation-resistant unalloyed carbide substrate. The new and improved coating improves edge stability with wide range speed and feed capabilities.