Stanley® drive tools are forged from high-quality steel and finished in high-polish nickel chrome. Selected ratchet handles are ergonomically designed and have an easy-to-use, thumb-operated reverse-switch mechanism. Sockets and extension bars remain locked onto the drive until disengaged with an easy-to-reach, low-profile quick-release button. Sockets feature our Max-Drive™ design, a unique radius corner design that provides 15% more torque to tighten fasteners easily and simplify the turning of rounded corners. Max-Drive™ helps reduce fastener wear by minimizing contact on the outer 5% of the fastener, helping to increase life expectancy. Max-Drive™ helps reduce slipping on frozen or rusted fasteners. All Stanley® ratchets, sockets and wrenches are manufactured globally to Stanley specifications, meeting and often exceeding ANSI specifications. CONTAINS:1/4" Drive 6 Point Standard: 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2 Inch, 6, 7, 8, 9, 10, 11, 12, 13 mm. Accessories: 1/4" Drive Pear Head Ratchet - Quick Release, 1/4" Drive 3" Extension Bar. Blow-Molded Case.