Task Tools T22283 Drill Chuck Key for 1/2-Inch and 3/8-Inch Chucks, 9/32-Inch Pilot Chuck key for 1/4-Inch and 3/8-Inch drills with keyed chucks Professional quality for quick and easy bit changes For cordless and electric drills Made of hardened tool steel for longer life Pilot size: 9/32-Inch