KLEIN 3239 Wrench
- Wrench
- 2.4 pounds
- 16 inches
- Better rated than 72%
At 16 inches and 2.4 pounds, this is a long-reach wrench aimed at trade work needing extra leverage, backed by a strong 4.8 star rating across 558 reviews.
As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.
How it ranks among the 561 wrenches we track
4.8★ across 558 Amazon ratings, Bayesian-smoothed toward the category average.
558 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
200+ 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 Klein 3239 is a 16 inch wrench weighing 2.4 pounds, sized well beyond a typical hand wrench for tasks that need extra reach and leverage. Jaw type and opening size are not listed, so confirm fit against your fastener before ordering.
Length is the standout figure here: at 16 inches, this wrench trades pocket-friendly size for the leverage needed on stubborn fasteners or hard-to-reach spots. It holds the strongest rating in this group of tools, though the listing stops short of naming jaw type or opening size.
- Klein 3239 wrench
- 16 inch length
- 2.4 lb weight
- 4.8 stars across 558 reviews
Who it's for
Tradespeople who need a long-reach wrench for extra leverage on tight or stubborn fasteners. Not the pick for anyone wanting a compact wrench for a small tool bag.
Strengths and trade-offs
Drawn from this product's published specifications.
- 16 inch length adds leverage for stubborn fasteners
- 4.8 star rating across 558 reviews, among the strongest in this batch
- Bulkier and heavier than a compact wrench, less convenient for a small tool bag
- Jaw type and opening size not specified in this listing
Performance notes
The 16 inch length gives more leverage than a standard hand wrench, useful for breaking loose stubborn fasteners or reaching into tighter clearances where a shorter tool cannot get purchase. The added length and 2.4 pound weight do make it bulkier to carry than compact alternatives, and jaw type or opening size is not specified, so match it against your fastener before buying.
Specifications
| Brand | Klein |
|---|---|
| Model | 3239 |
| Item Weight | 2.4 pounds |
| Length | 16 inches |
Other Klein wrenches
How it compares
This product against the closest alternatives we track in wrenches.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| KLEIN 3239 WrenchThis product | 4.8 / 5 | 558 | 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 |
Similar wrenches from other brands
Questions about the Klein 3239
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How long is the Klein 3239 wrench?
16 inches.
How much does the 3239 weigh?
2.4 pounds.
Is the Klein 3239 well rated?
Yes, it holds a 4.8 star average across 558 reviews, the highest rating in this group of tools.