The GEARWRENCH 84405 3/8" Drive Impact Extension (10") is a professional-grade tool engineered for high-torque applications where reach, strength, and reliability are essential. Whether you're working in automotive repair, heavy equipment maintenance, or industrial settings, this extension bar delivers the performance needed to tackle demanding tasks with confidence.

Key Features & Benefits

• Impact-Grade Chrome Molybdenum Alloy Steel (Cr-Mo)
  Built from premium Cr-Mo steel, this extension offers outstanding durability and strength, making it ideal for use with pneumatic and cordless impact tools

• Secure Socket Retention
  Includes a pin hole compatible with a pin and o-ring system, ensuring sockets stay securely attached during high-impact use

• Corrosion-Resistant Finish
  The industrial black manganese phosphate coating protects against rust and wear, extending the life of the tool even in harsh environments

• Enhanced Visibility
  Laser-etched markings provide quick and easy identification, while secondary hard stamping ensures long-term readability

• Off-Corner Loading Technology
  Reduces fastener rounding and improves grip, especially under heavy torque conditions

Technical Specifications

• Drive Size: 3/8"
• Length: 10 inches
• Material: Chrome Molybdenum Steel
• Finish: Industrial Black (Manganese Phosphate)
• Weight: Approx. 3.68 oz
• Drive Type: Square
• Locking Mechanism: No
• Magnetic: No
• Meets ASME Specification: B107.2
• Warranty: Full Lifetime Warranty