Model: 2 in 1 Material: HSS (high speed steel) Sizes: optional HRC=66~69 Good for soft wood and semi-hard wood turning HSS lathe knife cutters for woodturning copy cnc lathe machine This HSS lathe knife cutter is an useful woodturning tool, widely used with woodworking cnc copy lathe machine. The woodturning cutter is made of super hard high speed steel, great Hardness, wear-resisting, heat-resisting, HRC=66~69. The hss wood lathe cutter is great for soft wood and semi-hard wood turning. If you want to lathe beech and red oak, we have top quality lathe tools made of Swiss imported HSS, hardness HRC=68~70. HSS Wood Lathe Knives Sizes: 12mm*12mm*200mm 14mm*14mm*200mm 20mmx20mmx200mm 22mmx22mmx200mm Longer models: 20mm*20mm*300mm 22mm*22mm*300mm 25mm*25mm*300mm HSS Wood Lathe Cutter Blades Features: 1, 2 in 1, one blade body with a clamp for fixture. 2, Super hard, HRC=66~69. 3, Can be polished 4, Material is High Speed Steels (HSS) 5, High precision 6, Durable