Pro-Series 1/32-5/8" 3JT Keyless Drill Chuck Heavy Duty CNC Jacobs Type JT3 High quality, heavy-duty ball bearing design for long tool life0 - 5/8" capacity, all working parts hardenedVersatile design for drilling applications on portable bench, floor type drill presses, mills, lathes & more Smooth jaw movement with advanced gripping torque * We ship nationwide