• Thread Size: 1/2"-20 Right Handed

• Material: Steel

• Use To Mount Grinding Or Buffing Accessories

• Securely Mount Accessories That Are Up To 1/2" Thick With A 1/2" Arbor

• Fits Motor Shafts Of 5/8" Or 1/2" With Supplied Reducer Bushing

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.