GEARWRENCH 81756
- Wrench
- 0.3 inches
- 5.4 inches
- More reviewed than 57%
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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How it ranks among the 561 wrenches we track
4.7★ across 935 Amazon ratings, Bayesian-smoothed toward the category average.
935 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 561 wrenches we track - how the scorecard works · full wrenches data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
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.
GEARWRENCH is an established name in combination wrenches, and a short, focused wrench like this one is often bought to replace a lost or worn size in an existing 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.
Strengths and trade-offs
Drawn from this product's published specifications.
- Compact 5.5 inch length fits tight spaces
- Sized specifically for 8mm fasteners
- Strong buyer track record at 4.7 rating
- 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
| Brand | GEARWRENCH |
|---|---|
| Model | 81756 |
| Capacity | 0.3 inches |
| Length | 5.4 inches |
Other GEARWRENCH wrenches
How it compares
This product against the closest alternatives we track in wrenches.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| GEARWRENCH 81756This product | 4.7 / 5 | 935 | 4.1 / 5 |
| Amazon AMZ1715 WrenchAmazon | 4.7 / 5 | 14,700 | 4.6 / 5 |
| Wheeler 553556 WrenchWheeler | 4.8 / 5 | 17,300 | 4.6 / 5 |
| LEXIVON LX-145 WrenchLEXIVON | 4.8 / 5 | 14,700 | 4.6 / 5 |
| MALCO MSHMLC WrenchMalco | 4.8 / 5 | 14,300 | 4.6 / 5 |
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Questions about the GEARWRENCH 81756
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
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.