Superior Electric RV13M02 Power Tools Medium Duty 1/2 Inch Keyless Chuck With 1/2-20 UNF. Our keyless chucks have been widely used for handheld power tool drills, due to their improving grip torque and convenience.

Features:

• Easier Tightening Ergonomic design increases comfort and performance
• More Grip Torque-Users can apply more input torque, therefore more output torque is applied to the bit
• This chuck has hardened jaws for high gripping torque which prevents slippage when hammer drilling
• Avoid bit slippage and enhances wear resistance—even in the most demanding applications
• Recommended for professional grade AC/DC/Pneumatic Rotary/Hammer Drills
• Tightened and released by hand, allows more rapid tooling changes to increase machining productivity
• A self-tightening chuck feature produces significantly higher gripping force to resist tool shank slippage
• Our Chucks can be counted on for extremely high reliability and durability under the most demanding machining conditions
• All components exposed to wear are completely hardened to maintain accuracy and extend chuck life

Specifications:

• Maximum capacity(in): 1/2"
• Minimum Capacity(in): 0.06"
• Mount: 1/2"-20UNF
• Runout(in): 0.013"
• Sleeve Diameter (in):1.7"

Note: To be safe, always check the threaded mount before you buy replacement drill chucks.