1Possess high thermal strength and oxygen resistance, finish carburizing heat treatment, internal and external grinding, bring strong wear resistance and longer life 2Thread accuracy and surface are quenched and hardened to improve durability and accuracy, and the collet clamp is more compact 3Internal hole after grinding treatment, suitable for highelaboration machine tool processing, which requires longer life than ordinary tool holders 4Telescopic floating function effectively slows down the force of the tap when it is CCW, increases the life of the tap by more than 85%, and greatly improves the cutting efficiency 5Come with better elasticity, lower wear, higher concentricity, better protection due to too fast feed and retraction of the tapping, breaking of the tap and pressurecontrolled tensile deformation 6Used for tapping of machining center, telescopic floating tool holder, adjustable machine clearance compensation, and special chuck to prevent thread breakage Item Type: Tapping Holder Material: 20CrMnTi Model: BT40-ETP32-100 Product Use: Clamping wire tap (milling machine, CNC machining center) Tapping Range: M2-M30 D (outer diameter): Approx. 46mm / 1.8in L2: Approx. 25mm / 1in Nut Outer Diameter: Approx. 50mm / 2in Nut Height: Approx. 25mm / 1in Standard Speed: Below 2000 Adapter Chuck: ERG32 Size: Approx. 18mm / 0.7in 5mm / 0.2in 1 x Tapping Holder