Constructed from tempered chrome-vanadium steel for enhanced strength and durability. Product Contents: SAE: 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 3/8, 5/16. 1/2 Drive Offset Quick Release Ratchet. 1/2 Drive 3 Extension Bar Product Features:Chrome-plated finish resists corrosion