DASANMGMN High Quallity Grooving InsertAbout This Product:Material: Hard Alloy(Solid Carbide)1) DG3030a.CVD coated , TiN+MT-TiCN+Al2O3+Tin, golden yellow, medium thick TiCN with thinner Alumina.Resilience to wear and tear while reducing impact during processing.b.Aplication:General grooving and cutting turning of steel at high speeds .2) DMH25a.PVD coated, AlTin, grayish black, fine and smooth coating.Low friction coefficient, high oxidation temperature and high nano hardness.b.Aplication:Stainless steel grooving, cutting, can also be used for medium and low speed machining of steel and cast iron.