Feature:1. The Accuracy Of The Body Is 0.01Mm, The Concentricity Is High, The Processing Effect Is Good, The Efficiency Is Improved, And The Service Life Of The Tool Is Prolonged2. All Tool Holders Contain HighAccuracy Ball Sleeves, Which Reduce Wear And Have A Higher Concentricity, Which Can The Product From Excessively Fast Feeding And Retraction Of The Product Due To Tapping, Breaking Of The Tap And Deformation Under Pressure Control3. The Inner Hole Is Finely Ground, The Inner Hole Is Bright, And It Is Ground By The SelfDeveloped Grinding Stone4. Advanced Vacuum Quenching Furnace Can Achieve Carbonitriding, Improve The Hardness Of The Tool Holder And The Accuracy Of The Body5. Can Improve Tap Life, Reduce Machine Tool Parameter Requirements, Improve Thread Accuracy And Surface Quality, Torsion Overload Function6. Micro‑Compensation Synchronous Tapping, Improving Processing Efficiency, Optimization Of Extrusion Taps, Higher Suitable For Processing Fine Teeth And Inch TeethSpecification:Model: Bt30-Gt12-125LMaterial: High Speed SteelPurpose: Cnc Machining Center Tapping Tool HolderTool Handle Length: Approx. 125Mm / 4.9InSize Of Chuck: Approx. 19Mm / 0.7InMaximum Diameter Of Handle Taper: Approx. 31Mm / 1.2InOuter Diameter: Approx. 45Mm / 1.8InTapping Ability: M3-M16Applicable Chuck: Gt12 Tc312 G3Function: Used For Clamping During Thread Processing. The Telescopic Tapping Tool Holder Can Shrink Back And Forth By 5Mm Through The Internal Mechanism, Which Can The Tap When It Is Overloaded And Stopped.Package List:1 X Tapping Holder