Product Name: M Type External Turning Tool HoldersModel Number: M Type Product Parameters:1. Brand name: ... China3. Raw material: High speed steel4. Type: External turning tools, M type turning tool holder5. Hardness: 62HRC6. Diameter: 12mm-40mm7. Overall ... to 55HRC work material11. Controlling mode: CNC lathe, Turning machine12. Work material: Copper, Alloy steel, Tool steel, Carbon steel, Cast Iron, ...