Features Versatile Tool Compatibility: Easily fix various bits on your drill, enhancing productivity and adaptability to different working needs. Secure and Stable : Keyless and self-tightening design ensures reliable stability even under high-speed s, preventing any loosening of the chuck. Wide Clamping Range: With a 2-1m clamping range, this chuck accommodates a variety of bits, making it highly practical and versatile. Alloy Material: Crafted from premium alloy, this drill chuck boasts a sturdy and long-lasting structure, ensuring it withstands rigorous use without breaking. Quick and Convenient Installation: The keyless drill chuck's lightweight and compact size allow for swift and effortless installation, enhancing al efficiency. Features: 1、Useful Drill Chuck: This chuck can fix various bits on your drill to better satisfy your various working needs, efficient and effortless. 2、Reliable : Keyless and self tightening design ensures great stability under high work speed, and the firm fixing will not loosen. 3、Broad for Matching: The drill chuck has a wide clamping range is 2？1m, very suitable for a variety of bits, very practical and reliable. 4、Excellent Material: Adopting premium alloy material with a sturdy structure, not likely to break, and very for long term using. 5、Quick Installation: Quick in change, the keyless drill chuck with a light weight and a compact size allows for convenient installation. Specification: Item Type: Drill Chuck Chuck Diameter: Approx. 4m / 1.69in Connection Size: 1/2-20UNF Clamping Range: Approx. 2 ~ 1m / 0.08 ~ 0.51in Package List: 1 x Drill Chuck 3 x Rod Package List 1 x Drill Chuck 3 x Rod