• Chuck Size: 1/4"

• Shank: 1/4" Power Groove

• Used To Convert 1/4" Impactor Chucks To 1/4" Keyless Chuck

• Use With Any Drill Bit Up To 1/4" Diameter

• Use With A Hand Driver As A Pin Vise

Warning this product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.