This replacement chuck key tightens and loosens the jaws on Milwaukee 1/2" capacity drill chucks. The 1/4" pilot ensures proper engagement with the chuck's gear teeth for secure tightening.

• For use with 1/2" capacity chucks
• 1/4" pilot for proper gear engagement
• Compatible with Milwaukee chucks: 48-66-1360, 48-66-1370, and 48-66-1381
• Durable steel construction

Tip: Use with Milwaukee key holder 48-66-4040 to keep the chuck key attached to your drill's cordset.