

Milwaukee SHOCKWAVE Impact Duty 1/2" Drive 3" Extension 49-66-6706
MAXIMUM ACCESS TORQUE TRANSFER
In high-cycle industrial environments, reaching recessed fasteners without sacrificing torque integrity is the difference between a completed shift and a broken timeline. The Milwaukee 49-66-6706 SHOCKWAVE Impact Duty™ 1/2" Drive 3" Extension is engineered for the professional fleet, delivering a precision-machined connection that bridges the gap in hard-to-reach mechanical assemblies. Built from heat-treated Chrome Molybdenum steel, this extension manages the extreme rotational stress of high-torque impact wrenches while maintaining a slim profile for tight clearances.
- / OPTIMIZED DURABILITY: Forged with high-strength impact-grade steel to handle the heavy-duty cycles of 1/2" cordless and pneumatic impact drivers.
- / DUAL-HOLE DESIGN: Features a dedicated ring groove and pin hole for secure attachment to the anvil, ensuring the extension stays locked in place under high RPMs.
- / PERMANENT IDENTIFICATION: Laser-etched size markings offer high-visibility identification that won't wear off even after years of heavy jobsite abrasion.
- / ASME COMPLIANCE: Manufactured to meet and exceed industry standards for safety and performance in professional mechanical applications.
TECHNICAL SPECIFICATIONS
Extension Length: 3 Inches
Impact Rated: Yes
Material: Chrome Molybdenum Alloy Steel
Connection Type: Dual-Hole and Ring Groove
Warranty: Lifetime Limited
WHAT'S IN THE BOX
(1) SHOCKWAVE Impact Duty 1/2" Drive 3" Extension (49-66-6706)
Original: $13.99
-65%$13.99
$4.90Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
MAXIMUM ACCESS TORQUE TRANSFER
In high-cycle industrial environments, reaching recessed fasteners without sacrificing torque integrity is the difference between a completed shift and a broken timeline. The Milwaukee 49-66-6706 SHOCKWAVE Impact Duty™ 1/2" Drive 3" Extension is engineered for the professional fleet, delivering a precision-machined connection that bridges the gap in hard-to-reach mechanical assemblies. Built from heat-treated Chrome Molybdenum steel, this extension manages the extreme rotational stress of high-torque impact wrenches while maintaining a slim profile for tight clearances.
- / OPTIMIZED DURABILITY: Forged with high-strength impact-grade steel to handle the heavy-duty cycles of 1/2" cordless and pneumatic impact drivers.
- / DUAL-HOLE DESIGN: Features a dedicated ring groove and pin hole for secure attachment to the anvil, ensuring the extension stays locked in place under high RPMs.
- / PERMANENT IDENTIFICATION: Laser-etched size markings offer high-visibility identification that won't wear off even after years of heavy jobsite abrasion.
- / ASME COMPLIANCE: Manufactured to meet and exceed industry standards for safety and performance in professional mechanical applications.
TECHNICAL SPECIFICATIONS
Extension Length: 3 Inches
Impact Rated: Yes
Material: Chrome Molybdenum Alloy Steel
Connection Type: Dual-Hole and Ring Groove
Warranty: Lifetime Limited
WHAT'S IN THE BOX
(1) SHOCKWAVE Impact Duty 1/2" Drive 3" Extension (49-66-6706)






















