Three black metal socket extension bars in different sizes, arranged by length from shortest to longest on a white background. Each bar has a socket on one end and a threaded connector on the other, with the brand name 'STURMTECH' printed vertically on the shafts.
GEARWRENCH

GEARWRENCH 1/2-Inch Drive X-Core Pinless Universal Joint Impact Extension Set 3-Piece (84721N)

In stock
SKU: 84721N
$106.99 USD

Description

3 Piece 1/2" Drive X-Core™ Pinless Universal Joint Impact Extension Set 6", 9" & 12"

The GEARWRENCH 84721N is a three-piece 1/2-inch drive X-Core pinless universal joint impact extension set designed to improve access to fasteners in tight or awkward locations. Constructed from chrome-molybdenum alloy steel, the set includes 6-inch, 9-inch, and 12-inch extensions for automotive repair, industrial maintenance, and demanding mechanical applications.

Best Used For

  • Automotive repair: Reaching fasteners around engine components, suspension assemblies, and other restricted spaces.
  • Industrial maintenance: Accessing recessed or angled fasteners on equipment and machinery.
  • Mechanical service work: Extending the reach of compatible 1/2-inch drive impact sockets.

Key Performance & Safety Features

  • X-Core Pinless Joint Design: Four-lug ball-and-socket construction is engineered for strength and durability.
  • Flexible Access: Supports a maximum operating flex angle of 30 degrees.
  • Smooth 360-Degree Rotation: Helps position the extension for improved access.
  • Chrome-Molybdenum Steel: Provides strength for demanding impact applications.
  • Black Oxide Finish: Helps resist corrosion.
  • Laser-Etched Markings: High-visibility markings make tool identification easier.

What's Included

  • One 6-inch 1/2-inch drive pinless universal joint impact extension.
  • One 9-inch 1/2-inch drive pinless universal joint impact extension.
  • One 12-inch 1/2-inch drive pinless universal joint impact extension.
  • Plastic storage tray.

GEARWRENCH 84721N Mechanics Tool Set Specifications

Parameter Specification
Model & Classification GEARWRENCH 84721N | Professional Mechanics Tool Set
Drive Sizes Included 1/4 in. and 3/8 in. Drive Workstations
Ratchet Mechanism 72-Tooth Quick-Release Ratchets (5° Arc Swing)
Material & Finish Premium Chrome Alloy Steel with Full Polish Finish
Socket Configuration Standard & Deep Sockets (SAE and Metric Assortment)
Storage Case Rugged Blow-Molded Storage Case with Secure Latches
Primary Applications Automotive Repair, Equipment Maintenance & General Mechanical Work
Standards & Compliance Meets or Exceeds ASME B107 Specifications
Mechanics Tool Set Performance Note:

The GEARWRENCH 84721N mechanics tool set delivers comprehensive coverage with 72-tooth ratchets, chrome alloy sockets, and combination wrenches. Built for professional technicians, its polished finish and rugged storage case provide exceptional durability and organization in any shop environment.