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Klein Tools D50512B 12-Inch Adjustable Pliers, Quick-Adjust Klaw Pump Pliers, V-Jaw, Hardened Teeth for Maximum Torque

  • Based on 162 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Mar 14 – Mar 15
Order within 8 hours and 8 minutes
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Size: 12-Inch (1-Piece)


Features

  • MAXIMUM TORQUE: Unique plier jaw design provides a strong, slip-free hold, allowing for maximum torque
  • ENHANCED GRIP: Equipped with hardened teeth, minimizing wear and ensuring a secure hold on objects
  • DURABLE CONSTRUCTION: Full-steel body for superior strength and long-lasting performance
  • QUICK ADJUST KLAW: Enables swift and effortless one-handed adjustment of plier jaws for quick adaptability
  • COMPACT DESIGN: Slender design allows for easy work in confined spaces

Description

The Klein Quick-Adjust Klaw Pump Pliers feature a unique curved jaw with multiple contact points, delivering maximum torque and a secure grip. The hardened teeth on the jaw's gripping surface minimize wear and provide a strong, positive hold. Its all-steel construction ensures exceptional strength and long-lasting performance, even in the most demanding tasks. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

Brand: KLEIN TOOLS


Material: Stainless Steel


Product Dimensions: 11.91"L x 2.36"W


Color: Black


Handle Material: Stainless Steel


Item Weight: 1.02 Pounds


Specific Uses For Product: Twisting


Specification Met: Likely meets relevant industry standards, but no specific certifications mentioned


Grip Type: Ergonomic


UPC:


Brand: ‎KLEIN TOOLS


Material: ‎Stainless Steel


Product Dimensions: ‎11.91"L x 2.36"W


Color: ‎Black


Handle Material: ‎Stainless Steel


Item Weight: ‎1.02 Pounds


Specific Uses For Product: ‎Twisting


Specification Met: ‎Likely meets relevant industry standards, but no specific certifications mentioned


Grip Type: ‎Ergonomic


UPC: ‎092644730344


Manufacturer: ‎Klein Tools


Part Number: ‎D50512B


Item Weight: ‎1.02 pounds


Item model number: ‎D50512B


Size: ‎12-Inch (1-Piece)


Item Package Quantity: ‎1


Included Components: ‎Quick-Adjust Klaw™ Pump Pliers, 12-Inch


Batteries Required?: ‎No


Date First Available: February 6, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 14 – Mar 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Quality pliers for the price
Size: 10-Inch (1-Piece)
A good tool for the price. Easy jaw shifting capabilities and good tooth hardness. This tool should serve general applications, I cannot speak for those demanding situations where ultra gripping strength is required. But for the price, it has proven to be a good tool.
Reviewed in the United States on December 30, 2025 by Mark C.

  • Great little pliers !
Size: 7-Inch (1-Piece)
I’ve use a lot of the smaller pump pliers and these are by far the most versatile. Use daily in a professional plumbing setting
Reviewed in the United States on February 14, 2026 by anthony

  • Better than I thought
Size: 10-Inch (1-Piece)
These work great, was looking at knipex but didn't want the cost. These are quality for the money!
Reviewed in the United States on February 22, 2026 by Travis

  • Klein products are by far best brand out there
Size: 7-Inch, 10-Inch (2-Piece Set)
These are very nice. Just have to get use to pushing the release button to expand the width
Reviewed in the United States on December 31, 2025 by Kerry M.

  • A must have
Size: 7-Inch (1-Piece)
These are small, lightweight, and perfect for working on PVC and EMT conduit runs. Love them. The grip and channel is just right.
Reviewed in the United States on January 31, 2026 by UniversalMindSpace

  • Great push lock water pump/adjustable plier set
Size: 7-Inch, 10-Inch, 12-Inch (3-Piece Set)
Great adjustable plier set from Klein. I like the push lock vs older style water pump pliers that tend to slip and are hard to keep them set. These lock in and stay where you set them. Well constructed and should last a lifetime if not misused and abused
Reviewed in the United States on December 20, 2025 by Robert B.

  • fair tool
Size: 7-Inch (1-Piece)
Not great not Knipex cobra but fair tool
Reviewed in the United States on January 24, 2026 by Amazon Customer

  • Great purchase!
Size: 7-Inch, 10-Inch, 12-Inch (3-Piece Set)
Can’t go wrong!
Reviewed in the United States on February 17, 2026 by Amazon Customer

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