... according the National Stadards of GB1132(H7,H8,H9) and GB1132(D,D4,D5). The stocks are available at present. ... is following. coatingTIN, TIALN, ALTIN, TIAIN, etc.sizesstandard and non-standard.materialsolid carbide,hss,hss-coworkpiecwood,plywood,steel,aluminum ... stone etctool lifeLonger tool life, super high wear resistant and impact-resistant application.hardnessGood for machining up to HRC65 ...