1/2″ capacity drill chuck with R8 arbor. Fits mini mills with an R8 spindle.
Hardened ground center jaw improves durability and ensures straight alignment.
The rated capacity is 1/32″ to 1/2″. Runout of this drill chuck is 0.008″ (0.20 mm) or less.
Mount: 33 Jacobs taper with R8 Shank. Chuck Key included
