Great FNW16 Wrench
- Wrench
- 0.7 inches
- 4 ounces
- 3.3 inches
A useful add-on for a toolbox that already covers 18mm elsewhere, picked up specifically for its compact size rather than as a primary wrench.
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How it ranks among the 561 wrenches we track
4.6★ across 531 Amazon ratings, Bayesian-smoothed toward the category average.
531 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: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Great FNW16 is a compact wrench, just 85 millimeters long and weighing about 4 ounces, sized for an 18-millimeter fastener. Its small footprint points to a tool meant for tight clearances rather than heavy leverage work.
At under three and a half inches long, this wrench trades leverage for reach into tight spaces where a standard-length wrench won't fit. The 18mm capacity narrows its use to that one fastener size, so it works best alongside a broader set rather than as a standalone tool.
- 18-millimeter capacity
- 85-millimeter overall length
- 4-ounce weight
- Great brand
Who it's for
Fits mechanics and technicians who occasionally need to reach an 18mm nut or bolt in a cramped space where a full-size wrench won't turn. Not a fit for anyone needing high torque, since the short length limits leverage.
Strengths and trade-offs
Drawn from this product's published specifications.
- Short length reaches into tight clearances
- Light at 4 ounces, easy to carry
- Limited leverage for high torque fasteners
- Single 18mm size only
Performance notes
At 85mm long, the FNW16 offers far less leverage than a standard combination wrench, the tradeoff for fitting into confined spaces. The 4-ounce weight keeps it easy to carry in a pocket or small kit without adding bulk.
Specifications
| Brand | Great |
|---|---|
| Model | FNW16 |
| Capacity | 0.7 inches |
| Item Weight | 4 ounces |
| Length | 3.3 inches |
How it compares
This product against the closest alternatives we track in wrenches.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Great FNW16 WrenchThis product | 4.6 / 5 | 531 | 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 Great FNW16
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What size fastener does the Great FNW16 fit?
It is sized for 18-millimeter fasteners.
How long is the FNW16 wrench?
It measures 85 millimeters, shorter than a standard wrench.
How much does it weigh?
About 4 ounces.