Eazypower 88149 4-Way Chuck Key

Highlights:

• For all 3/8 & most 1/2 chucks
• Size: #1. #2. #3. #4
• Pilots size: 3/8 x 15/16. 3/8 x 1/4. 1/2 x 7/32. 1/2 x 1/4
• Guaranteed against defects in materials or workmanship
• Industrial quality