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GEARWRENCH

GEARWRENCH 81756 Combination Wrench 8mm

  • Jaw Capacity: 0.3 inches
  • Measurement Standard: Metric
  • Head Style: Box End
  • End Style: Hang Hole

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

For a buyer who specifically needs an 8mm wrench in GEARWRENCH's line, this is a straightforward single size pickup with strong buyer ratings.

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ASIN: B007TMGZISModel: 81756Category: Wrenches

Overview

GEARWRENCH's 81756 fills one specific gap in a metric wrench set: 8mm, with a compact 13.84 cm body that works where a longer wrench cannot swing. It's sold as a single tool, not part of a larger set.

The 5.5 inch length trades some leverage for the ability to work in cramped engine bays or under dashboards.

  • Brand: GEARWRENCH
  • Category: Wrenches
  • Length: 13.84 cm (about 5.5 in)
  • Capacity: 8mm

Who it's for

Mechanics or DIYers who need one 8mm wrench to fill a gap in a metric set, or who want a compact size for reaching into tight clearance spots. Not aimed at someone shopping for a full wrench set.

Pros and cons

Pros
  • Compact 5.5 inch length fits tight spaces
  • Sized specifically for 8mm fasteners
  • Strong buyer track record at 4.7 rating
Cons
  • Short length limits leverage on stubborn bolts
  • Single size, not a wrench set

Performance notes

A 13.84 cm wrench is short by wrench standards, which costs some leverage on tight or corroded fasteners but pays off in tight engine bays, under dashboards, or anywhere a longer handle cannot swing. Being sized for 8mm covers a common metric fastener size, useful as a replacement or backup for that one size.

Specifications

BrandGEARWRENCH
Model81756
Dimensions & fit
Item Length5.4 incheslower than 69% of 371 wrenches
Wrench Length StyleStandard
Capacity & performance
Jaw Capacity0.3 incheslower than 91% of 165 wrenches
Construction & materials
Material TypeAlloy Steel
ColorBlack
Finish TypesPolished
Included components
Package Quantity1
Unit Count1
Included Components(1) 8mm 6 Pt Combination Wrench
Warranty & support
Manufacturer Warranty DescriptionStandard Limited Lifetime
Other details
Measurement StandardMetric
Head StyleBox End
End StyleHang Hole
Operation ModeMechanical
Is RachetingNo
Is Non SparkingYes
Point Count6
Item Type NameGEARWRENCH 81756 8mm 6 Point Combination Wrench
Item Torque18.4 ft-lb

Closest rivals on specs

CRAFTSMAN CMMT42914 Combination Wrench 10mm
  • Jaw Capacity 0.3 vs 0.4 inches (-25%)
CRAFTSMAN CMMT42569 Ratcheting Wrench 10mm
  • Jaw Capacity 0.3 vs 0.4 inches (-25%)
Compare all side by side

Frequently asked questions

What size is the GEARWRENCH 81756?

It's built for 8mm fasteners, per the listed capacity.

How long is the GEARWRENCH 81756?

About 13.84 cm, or roughly 5.5 inches overall.

Does the GEARWRENCH 81756 come as part of a set?

The listing describes it as a single wrench, not a multi piece set.