WHOLESALE 8pc CRV IMPACT ADAPTER SET Chrome vanadium steel. Contents: 1/4" F x 3/8" M 3/8" F x 1/2" M1/2" F x 3/4" M3/4" F x 1" M3/8" F x 1/4" M1/2" F x 3/8" M3/4" F x 1/2" M1" F x 3/4" M. ⚠ WARNING: This product can expose you to Chromium, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.