Features Versatile Drill Chuck Design: This drill chuck securely holds various bits, catering to all your drilling needs with efficiency and ease Enhanced Stability Assurance: The self-tightening mechanism ensures a firm grip even at high speeds, preventing any loosening during use Wide Clamping Range: With a clamping range of 2" - 1m, this tool is compatible with a diverse array of bits, making it highly practical for any project Durable Alloy Construction: Made from premium alloy, this drill chuck boasts a sturdy design that resists breakage, ensuring long-lasting performance Quick and Easy Installation: Lightweight and compact, this drill chuck allows for fast bit changes, saving you time and effort on the job Features: 1、Useful Drill Chuck: This chuck can fix various bits on your drill to better satisfy your various working needs, efficient and effortl. 2、Reliable : Keyl 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 keyl 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