Features Vacuum Quenching: The wooden plate of the clip is vacuum quenching, with high hardness, toughness, strong flag and bearing, high hardness and high wear. Overall Structure: The overall formation of the mill tool fixed device has a good structural stiffness, and the pressure is scattered on the accurate needle roller of the cage during the use process. This is suitable for large cutting measurement. Fully Grinding: All calves are a whole, which effectively protects the connection of the cone holes of the voltage head. It is mainly used for milling machines, drilling machines, lathes, and small machine tools. Exquisite Grinding Process: The outside is bright, beautiful and elegant, and the handle holes are exquisite, grinded, and have a high center, which can provide a comfortable feeling and appearance. Wear Resistance and Stable: The milling cutter bracket is made of high -quality 40CR alloy steel, which has better wear and living performance. Specification: Item Type: Collet Chuck Tool Holder Material: 40cr alloy steel Model: NT40 ER32 Rear Drawing Thread: M16 Tail Aperture: Approx.16mm/0.6in Structure Type: Monolithic Accuracy: 0.003 Scope of Application: CNC machining centers, engraving machines and other high speed machines Package List: 1 x Collet Chuck Tool Holder 1 x ER32 Wrench Package List 1 x Collet Chuck Tool Holder 1 x ER32 Wrench