Sizes: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm 15 degree offset offers increased clearance. Flush mounted reversing lever improves access. 72 Teeth ratcheting box end needs as little as 5 degree to move fasteners versus 30 degrees for standard box end wrenches. Surface Drive?? on box end provides off-corner loading for better grip and reduced fastener rounding. Supplied in storage tray.