SKU: 71983527735

GEARWRENCH 86190 Bolt Biter 5 Piece SAE Wrench Insert Set for Damaged Fastener Removal Low Profile Extraction Tool Chrome Molybdenum Magnetic 1/4-1/2

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Description

GEARWRENCH 86190 Bolt Biter 5 Piece SAE Wrench Insert Set for Damaged Fastener Removal Low Profile Extraction Tool Chrome Molybdenum Magnetic 1/4-1/2Unstoppable Grip in Tight Spaces: GEARWRENCH Bolt Biter 5 Piece SAE Wrench Insert Set Don't let a rounded or frozen bolt bring your project to a halt. The GEARWRENCH 86190 Bolt Biter SAE Wrench Insert Set is the professional technician's secret weapon for removing heavily damaged fasteners in confined areas where standard extraction sockets simply cannot fit. Featuring a revolutionary bi directional design, these inserts allow you to both loosen and

Unstoppable Grip in Tight Spaces: GEARWRENCH Bolt Biter™ 5-Piece SAE Wrench Insert Set

Don't let a rounded or frozen bolt bring your project to a halt. The GEARWRENCH 86190 Bolt Biter™ SAE Wrench Insert Set is the professional technician's secret weapon for removing heavily damaged fasteners in confined areas where standard extraction sockets simply cannot fit. Featuring a revolutionary bi-directional design, these inserts allow you to both loosen and tighten stripped hardware with ease. At 70% thinner than traditional extraction tools, these ultra-low-profile inserts transform your existing static, ratcheting, or open-end wrenches into high-performance extraction systems. Whether you are working in a cramped engine bay or on industrial machinery, these inserts provide the slimmest and most effective solution on the market.

Crafted from premium Chrome Molybdenum (Cr-Mo) alloy steel with a durable manganese phosphate finish, these inserts are built for industrial strength and long-term corrosion resistance. The innovative tapered entry allows the insert to seat quickly and securely onto fasteners that have lost significant material, while the integrated magnetic retention system ensures a rock-solid fit inside your wrench during high-torque applications. The hex base is compatible with 6-point, 12-point, and spline wrenches, providing unmatched versatility. With high-visibility laser-etched markings for rapid size identification and a convenient injection-molded storage case, this 5-piece set is an essential upgrade for any master mechanic’s toolkit.

Key Features

  • Ultra-Thin Profile: 70% thinner than standard extraction tools for superior access in confined workspaces.
  • Bi-Directional Extraction: Specialized internal geometry allows for both removing or tightening damaged fasteners.
  • Tapered Entry Design: Enables the insert to seat easily and securely on rounded-out or frozen hardware.
  • Magnetic Retention: Built-in magnetic system ensures a secure, non-slip fit inside the wrench during use.
  • Universal Compatibility: Hex base design works seamlessly with 6-point, 12-point, spline, or ratcheting wrenches.
  • Industrial Strength: Forged from Chrome Molybdenum (Cr-Mo) steel for maximum durability and high-torque capacity.
  • High Visibility: Laser-etched size markings provide quick identification in low-light environments.

What's Included

  • (1) 1/4" Bolt Biter™ Wrench Insert
  • (1) 5/16" (8mm) Bolt Biter™ Wrench Insert
  • (1) 3/8" Bolt Biter™ Wrench Insert
  • (1) 7/16" (11mm) Bolt Biter™ Wrench Insert
  • (1) 1/2" Bolt Biter™ Wrench Insert
  • (1) Durable Injection Molded Storage Case

Product Specifications

Brand GEARWRENCH
Model Number 86190
Set Piece Count 5 Pieces
Material Chrome-Molybdenum (Cr-Mo)
Finish Manganese Phosphate
Size Range Min 1/4 in
Size Range Max 1/2 in
Magnetic Yes
Drive Type Bi-Directional Extraction
Length Format Standard (Low Profile)
Warranty Full Lifetime Warranty

Pro-Tip: When using these inserts in extremely tight quarters, pair them with a ratcheting box-end wrench. The combination of the Bolt Biter's bi-directional grip and the ratcheting mechanism’s small swing arc allows you to remove damaged fasteners with minimal clearance that would otherwise require total disassembly of surrounding components.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71983527735

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buyerMRS
Omaha, US
★★★★★ 4
much better than standard plastic cutting blades
Color: 2pk
They work well, and I'm not getting ground up plastic in my food. One issue--the thin tops can be difficult to pry off, even with fingernails. One of the tops came apart (metal cover, black plastic inner part), so I'll have to glue them together.
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Reviewed in the United States on December 28, 2025
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Gemz4Less
Houston, US
★★★★★ 5
Grinds like a champ
Color: 2pk
It was meant to replace an older, different set of grinders, and so far, it's holding up well, and grinding the peppercorns easily. The salt crystals are mostly uniform, but that's OK since we don't use it as a finishing salt. If we ever need to replace them, which I hope not this soon, we'd buy this one again.
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Reviewed in the United States on May 23, 2026
E
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Eliz
San Leandro, US
★★★★★ 5
Quality pepper grinder
Color: 1 pk
Such a great pepper grinder at a great value! I will order more.
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Reviewed in the United States on March 28, 2026
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KeriC
Bozeman, US
★★★★★ 5
Sleek and modern looking grinder
Color: 1 pk
Product was packaged securely and arrived in perfect condition with a cute thank you note. After a quick test and adjusting the grind coarseness, I think this will work great! Seems to be nice quality for the price. We'll see how it holds up over time. Amazon delivered to the wrong address, but I was able to retrieve the package and meet a neighbor, so no harm done.
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Reviewed in the United States on February 15, 2026
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av71
Boise, US
★★★★★ 3
Not for the weak...
Color: 1 pk
A bit tough to use. My blend has green peppercorns in it. The mill does dispense a finely ground powder but it takes some significant wrist action. I don't love this item which I find VERY "manual" though quieter than any motorized version. I wouldn't buy it again.
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Reviewed in the United States on December 3, 2025

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