Extra-long ratcheting box-end needs as little as 5deg to move fasteners. One-finger operated lever locks 180deg flex head at 13 positions for added access and control. Surface Drive Plus provides stronger grip on fasteners and nearly eliminates rounding. Pieces (qty.): 8, SAE Size(s) (in.): 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, Finish Type: Mirror, Combination Type: Open/boxed, Storage Type: Storage rack, Measurement Type: Standard (SAE), Ratchet Head: Yes, Flex Head: Yes, Material Type: Nickel-chrome plated, Point Size (qty.): 12.