Jacobs® 30354 Professional Keyless Chuck, 3/8" BF20 8" x 8" perma-coated aluminum

8" x 8" perma-coated aluminum screen

tube x 8" with 3/4" O

Solid steel construction

Push button to turn on gauge

Steel housing

Jacobs® 30354 Professional Keyless Chuck, 3/8" BF20 8" x 8" perma-coated aluminumSplit bite jaw: increases grip over standard bite chucks by providing more contact with the bit. Superior gripping force: provides high mechanical advantage to convert hand tightening torque into superior bit gripping force. Hammerlock mechanism: positive locking mechanism prevents loosening in hammer and other high vibration applications. 3 8" 10MM capacity 3 8 24 mount Anti lock nut: prevents chuck from locking open Versatility: model available to