The Milwaukee 3/8 in. drive 12mm metric 6-point socket was designed from the ground to be part of the most versatile socket family. The innovative socket design has four parallel flat sides, which deter rolling and are wrench-compatible. Socket sizes are stamped into the flats for improved easy-to-read visibility. Optimized socket geometry helps reduce bolt rounding and stripping. • FOUR FLAT™ sides deter rolling • Wrench-ready FOUR FLAT™ sides • Stamped sizes for better visibility • Chrome finish • Optimized geometry to prevent rounding • 6-Point socket • Lifetime guarantee • INCLUDES: 0