SHOCKWAVE Impact Duty™ 3/8" Drive 3" Extension

SHOCKWAVE Impact Duty™ 3/8" Drive 3" Extension

The Milwaukee 49-66-6703 SHOCKWAVE Impact Duty™ 3/8" Drive 3" Extension is a compact, high-strength extension designed to deliver extra reach without sacrificing durability, making it ideal for tight spaces and high-torque applications. Built from forged impact steel, it’s engineered to handle the demands of impact tools while maintaining a secure connection with your sockets. With easy attachment features and clear laser-etched markings, it keeps your workflow efficient—because stopping to fight your tools isn’t part of the plan.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 49-66-6703
• Brand: Milwaukee
• Drive Size: 3/8" Drive
• Length: 3 inches
• Product Type: Impact extension
• Material: Forged impact steel for durability in high-torque applications
• Compatibility: Optimized for use with 3/8" drive impact wrenches and impact sockets
• Retention: Ball detent design for secure socket engagement
• Attachment Design: Dual hole and groove for easier connection and removal
• Markings: Laser-etched part number and size for quick identification
• Standards: Meets ASME industry standards
• Durability: Built for heavy-duty impact use
• Warranty: Lifetime Guarantee (covers impact sockets and extensions only)

Ideal For

• Adding reach to hard-to-access fasteners in tight spaces
• Impact wrench users needing a compact, durable extension
• Automotive and mechanical work requiring strength and reliability
• Anyone who needs just a little extra reach—without overcomplicating the setup