Feature 1Useful Drill Chuck: This chuck can fix various bits on your drill to better satisfy your various working needs, efficient and effortless. 2Reliable Operation: Keyless and self tightening design ensures great stability under high work speed, and the firm fixing will not loosen. 3Broad for Matching: The drill chuck has a wide clamping range is 213mm, very suitable for a variety of bits, very practical and reliable. 4Excellent Material: Adopting premium alloy material with a sturdy structure, not likely to break, and very durable for long term using. 5Quick Installation: Quick in change, the keyless drill chuck with a light weight and a compact size allows for convenient installation.SpecificationItem Type: Drill ChuckChuck Diameter: Approx. 43mm / 1.69inConnection Size: 1/2-20UNFClamping Range: Approx. 2 ~ 13mm / 0.08 ~ 0.51in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Drill Chuck3 x Rod