Features One-Piece Structure: Reduces connection errors and prevents the chuck from falling off, ensuring a secure and reliable . 3-Jaw Clamping Type: Jaws shrink and hold stable, enhancing processing efficiency and providing powerful clamping for precision work. High Tensile Strength: Constructed with 42CrMo material, ensuring high tensile strength and good toughness, minimizing the risk of breakage during . Precision Ground : Enhances finish and abrasion resistance for improved performance and durability in various machining applications. Integrally Heat Treated Taper Shank: area with the machine tool spindle exceeds 85%, ensuring a secure and stable fit for consistent and s. Features: 1、The one-piece structure can reduce connection errors, and the threaded structure will prevent the chuck from falling off. 2、3？jaw clamping type, the jaws shrink and hold stable and more powerful, which is beneficial to improve processing efficiency. 3、Made of 42CrMo material, with high tensile strength and good toughness, it is not easy to break during . 4、The is ly ground to increase the finish and abrasion resistance to achieve a better use effect. 5、The taper shank is integrally heat treated and finely ground, and the area with the inner hole of the machine tool spindle is more than 85%. Specification: Item Type: Drill Chuck Model: APU13-MTB3 Material: 42CrMo Taper Shank Maximum End Diameter: Approx. 23.8mm / 0.9in Cone Length: Approx. 86mm / 3.4in Taper: Morse 3 Thread: M12 Type: Pull back self-tightening Hardness: HRC50-55 Accuracy: Less 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