Milwaukee 3/8″ Drive 21mm Standard 6-Point Chrome Socket 45-34-8021

The MILWAUKEE 3/8″ Drive 21MM Metric 6-Point Standard Socket with FOUR FLAT Sides was designed from the ground up to be part of the most versatile socket family. The 3/8″ drive sockets feature an innovative design with four parallel flat sides, which deter rolling and are wrench-compatible. The metric socket sizes are stamped into the flats providing improved, easy-to-read visibility. This deep well socket has been optimized geometry to reduce bolt rounding and stripping. Milwaukee backs their 3/8″ Drive Metric Sockets with a lifetime guarantee.