Drill Chuck, 1/2" with R8 Shank - Chuck Key Included and High Degree of Accuracy, LittleMachineShop.com (1396)

1/32"-1/2" Capacity drill chuck with a 33 Jacobs taper arbor that has an R8 Shank.

Chuck has a hardened ground center jaw that improves durability and ensures straight alignment. The chuck?s roundout is 0.008" (0.20 mm) or less.

Fits mini mills with an R8 spindle taper from a range of leading brands including LittleMachineShop.com HiTorque, Grizzly, Harbor Freight, Cummins, SIEG and others.