HHIP TNMG/PM triangle negative rake carbide insert is a suitable grades for a wide application. It is good for the finishing, semi-finishing and light roughing of steel, cast steel and stainless steel. - With stronger cutting edge, it is better for intermittent cutting than -DM, with wider cutting zone of steel materials XAB749: Cutting edge with special strength and toughness, in an optimal combination with MT-TiCN, thick layer Al2O3TiN coating. Product Specifications: ASA Insert No.: TNMG-432-PM; ISO Insert No.: TNMG220408PM; I.C. (Inch): 1/2; L: 7/8; S: 3/16; d: 13/64; r: .0315; Grade: XAB749.