... Lathe Tool Bits : 1.Material: M42, M35, F4341, 4241, 9341, 6542 2.Hardness:HRC80~82 3.Type: Square, Flat,Round Bits Lathe ... Tool Bits . All kind of material together with square, flat and ... 300mmMaterial: T1, M2 and super-hard materialApplication:Universal Hss Square Tools Bits are both suitable for cutting metal materials and nonmetal material ...