SHOCKWAVE Impact Duty™ 3/8" Drive 7" Extension

SHOCKWAVE Impact Duty™ 3/8" Drive 6" Extension

The Milwaukee 49-66-6704 SHOCKWAVE Impact Duty™ 3/8" Drive 6" Extension is a go-to solution for reaching those stubborn, hard-to-access fasteners, all while standing up to the punishment of high-torque impact work. Built from forged impact steel for extreme durability, this extension delivers the reach you need without compromising strength. With secure socket retention, easy attachment features, and clear laser-etched markings, it’s designed to keep your workflow smooth—because fighting your tools shouldn’t be part of the job description.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 49-66-6704
• Brand: Milwaukee
• Drive Size: 3/8" Drive
• Length: 6 inches
• Product Type: Impact extension
• Material: Forged impact steel for maximum 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 ring groove for quick, easy connection and removal
• Markings: Laser-etched size and part number for fast identification
• Standards: Meets ASME industry standards
• Durability: Engineered for extreme impact use
• Warranty: Lifetime Guarantee (covers impact sockets and extensions only)

Ideal For

• Reaching fasteners in deep or tight spaces without losing torque
• Impact wrench users who need both reach and durability
• Automotive, mechanical, and industrial work where access is limited
• Anyone who’s tired of coming up just short—this one gives you the reach to finish the job without improvising