Apex Tool 84650N Gearwrench 1/2DR LCK IMP EXT BAR

1/2" Drive Locking Impact Extension 12". Chrome Molybdenum Alloy Steel (Cr-Mo) for Exceptional Strength and Long Lasting Durability. Pin Hole for use with Pin and O-ring for Secure Socket Retention. Slide Locking Mechanism Securely Attaches Socket to Extension. High Visibility Laser Etched Markings. Manganese Phosphate Coating for Corrosion Resistance.