Jacobs 1/2 in. in. Keyless Drill Chuck 1/2 in. 3-Flat Shank 1 pc

Jacobs Hand-Tite Dill Chucks keyless operation increases operator productivity and convenience by speeding bit changeovers and eliminating downtime caused by loss of chuck keys. Ergonomic design increases hand tightening efficiency and user comfort. The chucks also feature Hammerlock, a positive locking mechanism that prevents loosening in hammer and other high vibration applications.