Features Premium Material: Annular Cutter Arbor is made of premium material and sturdy structure, the tap holde tool is very stable and durable. High efficiency: 0.03mm accuracy and large torsion guarantee better drilling performance and higher efficiency. From M5 to M20: The large clamping range allows for flexible application with verious screw taps. Easy to Carry&Store: The compact size and light weight make the annular cutter arbor very easy to carry and store. Widely Used: Tapper Holder Tool is suitable for tapping machine tools, milling machines, high‑speed lathes, CNC machining centers, etc. Specification: Item Type: Annular Cutter Arbor Product Model: TC20-MT3 Product Material: 40Cr Function: Suitable for tapping machine tools, milling machines, high-speed lathes, CNC machining centers and other reversible spindles. Accuracy: 0.03mm Clamping Range: M5-M20 (1/36-3/4 inch system) Hardness: HRC45-48 Applicable Machine Tool: Drilling Machine Taper: MT3 Package List:1 x Annular Cutter Arbor2 x Wrench Package List 1 x Annular Cutter Arbor 2 x Wrench