• 1/2" Drive Locking Impact Extension 12"
• Chrome molybdenum alloy steel (Cr-Mo) for exceptional strength and durability
• Pin hole can be used with pin and o-ring for secure socket retention
• Locking mechanism with sliding collar securely attaches socket to extension
• Manganese phosphate finish to resist corrosion
• High-visibility laser etched markings provide quick size identification
• Meets or exceeds ASME specifications