1. Product use: By connecting the taper hole drill chuck, so as to connect with the machine tool, and the flat position is convenient for disassembly from the machine tool.2. High concentricity when working with the corresponding drill chuck.3. Can be adapted to a variety of drilling machines, milling machines,lathes and so on.4. not easy to rust, wear resistant, long service life.5. Professional designed, beautiful appearance, easy to use.Specification:Item Type: Morse Taper Drill Chuck ArborModel: MTB3-B16Hardness: HRC-55Accuracy: less than or equal to 0.003colour: silverMaterial: steelPackage Contents: 1 X Drill Chuck ArborOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.