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 Operation: 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 2‑13mm, 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 durable 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. 43mm / 1.69in Connection Size: 1/2-20UNF Clamping Range: Approx. 2 ~ 13mm / 0.08 ~ 0.51in Package List 1 x Drill Chuck 3 x Rod