Suitable for most face milling application on steel, stainless steel and cast iron. Reduces vibration on long overhang applications. Octagonal double side insert with 16 cutting edges is the most economical insert on the market for face machining application. Negative radial rake angle and axial rake angle structure combined with thick ONHU insert body improves cutter overall resistance to impact and toughness. Unique insert screw hole design to improve clamping rigidness. Insert available for semi-finishing and roughing application. Inserts NOT included.