Bit/Blade Mounting Size - 0.040 in [Min], 1/2 in [Max]
Housing Diam - 2.400 in
Capacity - 0.040 in (mild steel) [Min], 1/2 in (mild steel) [Max]
Mechanism - Ball Bearing
Type - Keyed
1-piece fluted sleeve construction. Ball trust bearing reduces friction in chuck closing mechansim. Through-hardened sleeve teeth, nose, and keyholes for wear resistant. 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.