Feature:1. Applicated widely, such kind of collet chuck holder is adaptive to various machine tools.2. Lathe tool holder is with high hardness for long life, after quenching and hardening.3. Designed for more durability, the milling tool holder can work well with high performance.4. Fit for inner hole milling cutter, such chuck holder is manufactured via hardened treatment.5. Chuck holder is manufactured by high speed steel, which is not easy to damage for a long time.Specification:Item Type: CNC tool holderMaterial: High speed steelApplicable Machine: Milling machineHardness: 55-58FMB Post: Approx. 27mm / 1.06inAccuracy: Within 0.003mmClamping Range: Approx. 1 ~ 20mm / 0.04 ~ 0.79inSpeed: 30000 rpmWhether Coated: Non-coatedTail Hole Diameter: Approx. 12mm / 0.5in Package List:1 x CNC Tool Holder