Apex Tool 84389 Gearwrench SKT HEX IMP 3/8DR 4MM

3/8" Drive Hex Bit Impact Metric Socket 4mm. Chrome Molybdenum Alloy Steel (Cr-Mo) for Exceptional Strength and Durability. Pin Hole for Use with Pin and O-Ring for Secure Socket Retention. Manganese Phosphate Coating to Resist Corrosion. High Visibility Laser Etched Markings. Secondary Hard Stamping.