A close-up view of the 12mm GEARWRENCH Bolt Biter socket, showing the internal fluted design that grips damaged fasteners.
A studio photo of the GEARWRENCH 86184 12mm Bolt Biter impact nut extractor and driver, showing its 1/4-inch hex shank.
A studio photo of a GEARWRENCH 3/8-inch Bolt Biter impact nut extractor and driver on a white background.
The GEARWRENCH 86184 12mm Bolt Biter nut extractor and driver in its black retail hang-tab packaging.
The GEARWRENCH Bolt Biter nut extractor, attached to an impact driver, is shown removing a recessed, greasy bolt from an engine block.
A mechanic uses a 10mm GEARWRENCH Bolt Biter nut extractor in an impact driver to work on a dirty, greasy metal gear.
A person uses an impact driver with a GEARWRENCH Bolt Biter nut extractor to remove a bolt from a rusty bracket in a car's engine bay.
A GEARWRENCH Bolt Biter nut extractor in a drill is positioned over a bolt on a dirty black engine valve cover.
The GEARWRENCH Bolt Biter nut extractor, attached to an impact driver, is shown removing a recessed, greasy bolt from an engine block.
A close-up view of the 12mm GEARWRENCH Bolt Biter socket, showing the internal fluted design that grips damaged fasteners.
A close-up view of the 12mm GEARWRENCH Bolt Biter socket, showing the internal fluted design that grips damaged fasteners.
A studio photo of the GEARWRENCH 86184 12mm Bolt Biter impact nut extractor and driver, showing its 1/4-inch hex shank.
A studio photo of a GEARWRENCH 3/8-inch Bolt Biter impact nut extractor and driver on a white background.
The GEARWRENCH 86184 12mm Bolt Biter nut extractor and driver in its black retail hang-tab packaging.
The GEARWRENCH Bolt Biter nut extractor, attached to an impact driver, is shown removing a recessed, greasy bolt from an engine block.
A mechanic uses a 10mm GEARWRENCH Bolt Biter nut extractor in an impact driver to work on a dirty, greasy metal gear.
A person uses an impact driver with a GEARWRENCH Bolt Biter nut extractor to remove a bolt from a rusty bracket in a car's engine bay.
A GEARWRENCH Bolt Biter nut extractor in a drill is positioned over a bolt on a dirty black engine valve cover.
The GEARWRENCH Bolt Biter nut extractor, attached to an impact driver, is shown removing a recessed, greasy bolt from an engine block.
A close-up view of the 12mm GEARWRENCH Bolt Biter socket, showing the internal fluted design that grips damaged fasteners.
GEARWRENCH

GearWrench Nut Extractor 86184 12 mm Bolt Biter (Impact Ready Driver Rounded Damaged Fasteners Removal Tool)

In stock
SKU: 86184
$5.99 USD
$11.68 USD Sale $5.99 USD

Description

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GearWrench 86184 12mm Bolt Biter Impact-Ready Damaged Nut Extractor and Driver

The GearWrench 86184 12mm Bolt Biter Nut Extractor removes and retightens severely rounded, rusted, frozen, or stripped 12mm bolt heads without slipping. Engineered from high-strength Chrome-Molybdenum alloy steel with an impact-ready torsion zone, this 2.56-inch driver features bi-directional bi-directional gripping teeth that clamp onto damaged fasteners instead of cutting into them. Protected by a corrosion-resistant black oxide finish and backed by a full lifetime warranty, this specialized extractor provides automotive technicians and mechanics with 50 times longer operating life than standard twist extractors during high-torque removal tasks.

Best Used For:

  • Stripped & Rounded Bolt Extraction: Removing rusted, seized, or rounded 12mm automotive suspension and engine bay bolts safely.
  • High-Torque Impact Wrench Applications: Driving damaged fasteners out rapidly using high-power pneumatic or cordless impact drivers.
  • Damaged Thread Restoration: Gripping and turning compromised fastener heads to allow temporary tightening or extraction.

Key Performance & Safety Features

  • Bi-Directional Gripping Design: Patented internal flutes grip tightly to both remove and retighten damaged or frozen fasteners.
  • 50X Longer Service Life: Clamping mechanism prevents metal shaving and excessive tooth wear compared to conventional cutting extractors.
  • Impact-Ready Cr-Mo Construction: Chrome-Molybdenum alloy steel absorbs intense rotational torque loads from high-power impact tools.
  • Tapered Entry Profile: Eases socket seating directly onto deformed or damaged bolt heads for an instant non-slip lock.
  • High-Visibility Laser Etching: Permanent size markings ensure quick identification inside crowded tool chests.

What's Included

  • (1) GearWrench 86184 12mm Bolt Biter™ Nut Extractor and Driver

Technical Specifications

Specification Detail
Model Number / Part ID 86184 (Bolt Biter Series)
Driver Fastener Size 12 mm Metric Size
Tool Construction Alloy Chrome-Molybdenum (Cr-Mo) Steel
Overall Tool Length 2.56 in (65.0 mm)
Surface Finish Coating Black Oxide Corrosion-Resistant Finish
Driver Operational Mode Bi-Directional Extraction & Driving
Impact Tool Compatibility Impact Ready for High-Torque Guns
Size Identification Mark Laser-Etched High-Visibility Stamping
Manufacturer Guarantee GearWrench Full Lifetime Warranty
Primary Trade Application Stripped Bolt Removal, Automotive Repair
Pro-Tip: Drive the GearWrench Bolt Biter fully onto the rounded 12mm fastener head with a light hammer tap before engaging your impact wrench; a seated grip ensures maximum biting contact on heavily stripped bolts.