ITEM NAME:10Pcs Mgmn200 G Nc3030 Carbide Insert Grooving Cutting Tools Cnc Turning To M1W8 10Pcs Mgmn200 G Nc3030 Car.10 CNC tool. high resistance to the coating of special crystal off structure,showing superhard wear resistance and impact resistance,the new coating technology to improve the adhesion between the multi-layer coating.