Features Durable 45# Steel Construction: Crafted from high-quality 45# steel, this chuck offers exceptional strength and durability, ensuring reliable performance for all your machining tasks Enhanced Grip for Increased Torque: The innovative design facilitates a comfortable and secure clamping action, significantly improving output torque for more efficient drilling and milling Efficient Design for Reduced Vibration: Featuring a convex and concave structure, this chuck minimizes vibrations during operation, enhancing stability and precision for your projects Automatic Self-Tightening Mechanism: The self-tightening feature increases gripping force automatically, providing high reliability and stability during use, making your work easier and safer Versatile Compatibility with Tools: Designed for use with various machines, including drill machines, milling machines, lathes, and electric hand tools, ensuring you can tackle a wide range of applications Features: 1、Made of 45# steel, solid and to use 2、Good metal texture, comfortable , easy to clamp, so that the output torsion becomes larger 3、Beautiful and practical design of the convex and concave, so that before and after the set can effectively cope with and can reduce the shaking jacket 4、Self tightening keyl feature automatically increasing gripping force, high reliability, and stability 5、Widely used with various drill machines, milling machines, lathes, boring lathes and electric hand tools Specification: Features: Made of 45# steel, solid and to use. Good metal texture, comfortable , easy to clamp, so that the output torsion becomes larger. Beautiful and practical design of the convex and concave, so that before and after the set can effectively cope with and can reduce the shaking jacket. Self tightening keyl feature automatically increasing gripping force, high reliability, and stability. Widely used with various drill machines, milling machines, lathes, boring lathes and electric hand tools. Specification: Material: 45# steel Accuracy: 0.002 Chuck Capacity: 1-16mm Chuck External Diameter: 48mm / 1.89inch Chuck Length: Approx. 100mm / 3.94inch Arbor Type: MT2-JT3 Arbor Length: Approx. 115mm / 4.53inch Total Length: Approx. 200mm / 7.87inch Weight: Approx. 1168g Package Included: 1 x Keyl Drill Chuck 1 x MT2-JT3 Arbor Note: 1. Only things package included, no other stuff. 2. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. Package List