Feature: 1. The one‑piece structure reduces the connection error, and the female thread structure prevents the collet from falling off. 2. The 3 jaws chuck is hardened, the clamping is stable and the clamping is stronger, and the processing efficiency is improved. 3. Built‑in high‑performance locking system can prevent the drill bit from slipping or falling off after installation. 4. The surface of the drill chuck is precisely ground to increase the smoothness and wear resistance to achieve a better use effect. 5. Commonly used for taper holes of lathe spindle holes, bed tail holes, drilling machines, milling machines and various cutting machine tools. Specification: Item Type: Drill Chuck Model: APU13-MTB2 Material: 42CrMo Taper Shank Maximum End Diameter: Approx. 17.7mm / 0.7in Cone Length: Approx. 68mm / 2.7in Taper: Morse 2 Thread: M10 Type: One-piece drill chuck Hardness: HRC50-55 Accuracy: Less than 0.07mm Clamping Range: Approx. 1-13mm / 0-0.5inHow to Use: Machine tool clamping use, self-tightening. Package List: 1 x Drill Chuck