Astro 78318 Wrench
- Wrench
- 1.34 pounds
- 18 inches
An 18 inch wrench aimed at fasteners that need extra hand leverage. Confirm the jaw size fits your application before ordering.
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How it ranks among the 561 wrenches we track
4.7★ across 662 Amazon ratings, Bayesian-smoothed toward the category average.
662 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
900+ 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
The Astro 78318 is an 18 inch wrench weighing about 1.3 pounds, built with extra length for added leverage on stubborn fasteners.
The long handle is the defining feature here, letting you apply more hand torque than a standard length wrench would without a cheater bar. Jaw size and type are not listed, so match the opening to your fastener before assuming fit.
- 18 inch overall length
- 0.61 kg, about 1.3 lb, weight
- Wrench category tool
- Built for added leverage
Who it's for
Works for anyone dealing with tight or corroded fasteners who wants extra hand leverage. Not the right pick if you already know you need a specific jaw or socket size, since that detail is not confirmed here.
Strengths and trade-offs
Drawn from this product's published specifications.
- 18 inch length gives extra hand leverage
- Under 1.5 lbs, manageable one handed
- Suited to stuck or high torque fasteners
- Jaw type and size not specified
- No indication of adjustable vs fixed jaw
Performance notes
Length is the main mechanical advantage of a tool like this: an 18 inch handle multiplies hand force at the jaw far more than a 6 or 10 inch wrench would on the same fastener.
Specifications
| Brand | Astro |
|---|---|
| Model | 78318 |
| Item Weight | 1.34 pounds |
| Length | 18 inches |
Other Astro wrenches
How it compares
This product against the closest alternatives we track in wrenches.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Astro 78318 WrenchThis product | 4.7 / 5 | 662 | 4.2 / 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 Astro 78318
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How long is the Astro 78318?
18 inches.
How much does it weigh?
About 0.61 kilograms, roughly 1.3 pounds.