












🔧 Unlock pro-level grip with Klein’s extra-wide jaw wrench—because size and precision matter.
The Klein Tools D509-8 Adjustable Wrench combines an 8-inch compact frame with a jaw capacity typically found in 12-inch wrenches, featuring standard and metric size markings for quick adjustments. Its unique design minimizes jaw shank protrusion, enabling superior access in tight spaces. Crafted from induction hardened steel with a wide ergonomic handle, this wrench delivers professional-grade strength, durability, and comfort for tradesmen who demand the best.






| ASIN | B00BC39ZZU |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 739,207 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,291 in Adjustable Wrenches |
| Colour | Blue |
| Customer Reviews | 4.8 4.8 out of 5 stars (339) |
| Date First Available | 29 May 2013 |
| Finish | Brushed |
| Head Style | Box End |
| Included Components | Wrench |
| Item Package Quantity | 1 |
| Item Weight | 348 g |
| Item model number | D509-8 |
| Manufacturer | Klein Tools |
| Material | Induction Hardened Steel |
| Measurement System | Inch |
| Number of handles | 1 |
| Part Number | D509-8 |
| Pattern | Solid |
| Power Source | hand_powered |
| Product Dimensions | 21.59 x 3.81 x 0.76 cm; 348.7 g |
| Shape | Rectangular |
| Size | 8-inch |
| Special Features | Standard and Metric Sizes Marked for Fast Adjustment |
| Style | Extra-Wide Jaw, 8-Inch |
A**W
One of the best adjustable wrenches I have found. Use it every day doing my oilfield trade. Opens wide to remove 1" plugs while being handy enough for smaller bolts/nuts. Quality is what you would expect from Klein.
J**N
Llegó antes de lo esperado, la calidad es muy buena como esperaba.
V**T
Good quality and price
A**L
This is a relatively heavy, well made, adjustable wrench. It lacks a positional lock but otherwise does everything you can reasonably expect from an adjustable wrench. The manufacturing precision is really what set this tool apart. Too often I find cheap wrenches which after a few uses the jaw faces are no longer parallel. Or there is too much slack and wobble in the sliding jaw. While I have owned wrenches which were even tighter in terms of precision movement, they cost more than twice as much (and are increasingly hard to find these days). The width of the fully opened jaw is also a stand-out feature - certainly wider than any 8 inch wrench in my toolbox. Overall the spanner feels 'chunky' and solid in my hand, with an excellent grip. I should add, I 'found' this brand after watching a youtube video from project farm - this youtuber reviews and tests (to destruction) a wide variety of tools and glues etc.. Klein came out as his preferred choice for people on a budget (aka me).
E**N
Good tool made very well
Trustpilot
2 weeks ago
2 months ago