SAE Crowsfoot Wrench Set Crowfoot sizes include: 3/8, 7/16, 1/2, 9/16 5/8, 11/16, 3/4, 13/16, 7/8 and 1 inch 1-Free 3/8 drive socket holder rail to keep them organized For use with a 3/8 inch drive ratchet or breaker bar Drop forged and heat treated Chrome plated