Item Type: Annular Cutter Arbor Product Model: TC20-MT2 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 (3/16-3/4 inch system) Hardness: HRC45-48 Applicable Machine Tool: Drilling Machine Taper: MT2 Package List 1 x Annular Cutter Arbor 2 x Wrench Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 10.03mm accuracy and large torsion guarantee better drilling performance and higher efficiecny. 2The clamping range of the tapping chuck is M5 to M20, so you can apply various screw taps on it. 3Suitable for tapping machine tools, milling machines, high-speed lathes, CNC machining centers, etc. 4With high quality material and sturdy structure, the tap holder is very stable and durable for long use. 5Also, the compact size and light weight make the annular cutter arbor very easy to carry and store.