This chuck key tightens the jaws of the 3/8 in. capacity chuck (48-66-0240), (48-66-0805) and (48-66-0806_. Key holder (48-66-4040) should be used to attach this chuck key to the collet's.

• For use with chucks 48-66-0240, 48-66-0805 and 48-66-0806
• Use with key holder 48-66-4040
• For cordless tools
• Easy replacement