Features One-Piece Structure Design: The seamless structure minimizes connection errors, ensuring reliable performance and stability during use Hardened 3 Jaws Chuck: This feature provides strong clamping force, enhancing stability and improving machining efficiency for your drilling tasks High-Performance Locking System: The built-in mechanism prevents drill bits from slipping or falling off, giving you confidence during operation Precision Ground for Smooth Performance: The finely ground surface increases smoothness and wear resistance, resulting in optimal functionality and longevity Versatile Compatibility: Ideal for taper holes in lathe spindles, drilling machines, milling machines, and various cutting tools, making it a must-have for multiple applications Features: 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 procing efficiency is improved. 3、Built？in high？performance locking system can prevent the drill bit from slipping or falling off after installation. 4、The of the drill chuck is ly ground to increase the smoothn 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 Hardn: HRC50-55 Accuracy: L than 0.07mm Clamping Range: Approx. 1-1m / 0-0.5in How to Use: Machine tool clamping use, self-tightening Package List: 1 x Drill Chuck Package List 1 x Drill Chuck