1-piece fluted sleeve construction
Ball trust bearing reduces friction in chuck closing mechansim
Through-hardened sleeve teeth, nose, and keyholes for wear resistance
Maximizes gripping force and drilling accuracy
Treated to ensure thread life and high gripping surface hardness
Jaws center-ground for absolute straightness and alignment
For heavy-duty, close tolerance production drilling
For production drilling equipment, jig borers, milling machines, lathes, and radials