Engineered for tradesmen and serious craftsmen, the Jacobs Professional Duty Chuck delivers unmatched accuracy, grip, and strength. Featuring through-hardened jaws and durable internal construction, each unit is inspected for 100% performance and precision.

• Industrial quality construction designed for professional tradesmen and serious home craftsmen
• Through-hardened jaws provide superior grip and strength compared to standard chucks
• Capacity ranges from 0.063 in. minimum to 0.500 in. maximum
• Standard 1/2 in. - 20 threaded mount for secure installation
• Features a fluted sleeve finish for enhanced durability
• Includes KK series chuck key for precise tightening