Feature: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 of 2.013mm, very suitable for a variety of bits, very useful and reliable.4. Excellent Material: Adopting premium alloy material with a sturdy structure, not likely to break, and very sturdy 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: Keyless Drill ChuckMaterial: Aluminum alloy, alloy. Chuck Diameter: Approx. 43mm / 1.69inChuck Length: Approx. 62mm / 2.44inConnection Type: 1/2-20UNFClamping Range: Approx. 2.0 ~ 13mm / 0.08 ~ 0.51in.Package List:1 xKeyless Drill Chuck