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  • IRWIN Tools QUICK-GRIP SL300 Series Bar Clamp / Spreader, 12-Inch (512QCN)
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IRWIN Tools QUICK-GRIP SL300 Series Bar Clamp / Spreader, 12-Inch (512QCN)

195 customer reviews

List Price: $31.21
Price: $18.02 ($18.02 / EA) & FREE Shipping on orders over $35. Details
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12 inch
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  • Provides up to 300 pounds of sustained clamping force. Tested to complete 5, 000 cycles without failure, more than other brands.
  • I-beam bar reduces flexing and bowing. Heat-treated, black oxide carbon steel provides maximum durability.
  • Clutch lock mechanism with quick-release trigger lets you quickly and easily adjust jaw with the touch of a button.
  • Locking swivel jaws with removable full-face pads distribute clamping force easily, while protecting the work surface.
  • The Quick-Change screw easily converts the clamp to a spreader and eliminates end-jaw rattles. Affixed spring-loaded screw won't get lost.
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74 new from $17.10
$18.02 ($18.02 / EA) & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

IRWIN Tools QUICK-GRIP SL300 Series Bar Clamp / Spreader, 12-Inch (512QCN) + Stanley 46-071 Premium Quick Square Layout Tool
Price for both: $23.99

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Product Description

Size: 12 inch

Provides up to 300 pounds of sustained clamping force. Tested to complete 5, 000 cycles without failure, more than other brands. I-beam bar reduces flexing and bowing. Heat-treated, black oxide carbon steel provides maximum durability. Clutch lock mechanism with quick-release trigger lets you quickly and easily adjust jaw with the touch of a button. Locking swivel jaws with removable full-face pads distribute clamping force easily, while protecting the work surface. The Quick-Change screw easily converts the clamp to a spreader and eliminates end-jaw rattles. Affixed spring-loaded screw won't get lost. IRWIN Tools QUICK-GRIP SL300 Series Bar Clamp / Spreader, 12-Inch (512QCN)

Product Information

Size: 12 inch
Technical Details
Part Number 512QCN
Item Weight1.5 pounds
Product Dimensions4 x 13 x 2 inches
OriginChina
Item model number512QCN
Size12 inch
Item Package Quantity1
Warranty DescriptionLIFETIME
  
Additional Information
ASINB001DK7SJM
Best Sellers Rank #6,920 in Home Improvement (See top 100)
Shipping Weight1.5 pounds (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First AvailableJuly 7, 2004
  
Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
Warranty, Parts: Parts
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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

16 of 16 people found the following review helpful By A Customer on June 29, 2000
Size: 36 Inch
These are your typical hand-ratchet clamps with an added feature -- the ends are reversible so it can work as a spreader if needed. They are solidly constructed, do not mark wood surfaces, and a great addition to my shop. I sometimes can't get the same force I would normally get out of a screw clamp, but for most jobs this is a great clamp.
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18 of 19 people found the following review helpful By D on October 26, 2001
Size: 36 Inch
This clamp uses the ingenius trigger grip design for unbelievable ease of use. This makes the clamp unbelievably easy to tighten using one hand. A few warnings about this particular product, however:
(1) Be sure the size is correct. I think the 36" size is too big for all but the biggest projects. I think the 18" size is the best all-around size.
(2) The plastic construction makes the clamps best for holding items "approximately" in place. If you need total clamping for cutting precision, look elsewhere.
All in all, a good product if it is the right size, and used for the right purpose.
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12 of 12 people found the following review helpful By Bob Feeser TOP 1000 REVIEWERVINE VOICE on February 24, 2003
Size: 36 Inch
The big benefit to these is that you get true mobility out of them. While holding a piece of work, lined up, in one hand, you use these quick grips in the other hand to secure the work. If it slips while clamping, it is still a one handed tool to release it, and reclamp it again. Enables you to maintain a professional flow to your work. I feel awkward when using regular clamps in comparison. They require two hands. You could use a spring clamp to hold it together, then get another clamp to give it a final hold, but the quick grip saves you from having to do that.
Having these clamps in a few different sizes is beneficial as well. Small ones are more frequently used, and don't get in the way. The 33 1/2" is great when you need to hold larger projects together, and you can't effectively use two smaller ones to substitute. Additionally the macro clamps give you deeper jaws for a farther reach, enabling you to use them for securing work, to your radial arm saw table for example. They are fast enough to be used for almost any application. Sometimes I use them to secure work when sanding with a power sander. A couple squeezes and they are on, and one squeeze and they pop off.
After getting the smaller ones, and using them, I immediately order two of the 33 1/2" for larger projects, and for tie downs on equipment, including the drill press, and occasionally the radial arm saw.
Their is a small rubber stopper, which you can readily remove, in order to reverse the end, and make it a spreader as well. Something not needed very often, but difficult to achieve without one of these.
One note is that these have built in rubber pads, that completely cover the metal internal end. That is an advantage when you do not want to mar the wood.
Read more ›
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16 of 19 people found the following review helpful By Run on March 31, 2012
Size: 24 inch Verified Purchase
I am a cabinet maker and have used the 12" version for several years. I find them incredibly handy and I have bunches of them. However, the reason I have bunches of them is that they wear out, loosing the ability to clamp and hold tightly. I had hoped these would be a bit tougher, but I don't think they are. Still they are handy. For anything serious, glue-ups, curves, and the like. I'd use a different clamp. But these are handy for quickly pulling a piece together before applying a more reliable clamp.
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7 of 7 people found the following review helpful By Ben Crosby on March 5, 2012
Size: 12 inch
I've used these in a few different settings, mostly doing theatre carpentry. They're a great fast alternative to c-clamps, and have the added bonus that you can do all of the application and placing with one hand, so you can use your other to hold the piece while you do it. They can't apply as much pressure as a c-clamp, but if you need that kind of pressure, these can at least help you get everything into place before you put the c-clamp on. I would be curious about D. Baumgartner's (the above reviewer) experience with these--they're designed to release with one hand, and they've always done it admirably for me.
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Size: 12 inch Verified Purchase
These are well-made and very convenient clamps. I have only used them for one project so far (hanging five slab doors), but everything I used these clamps, they did what I wanted, did what I needed, and were never a part of the problem, only a part of the solution.

My only issue is with the release mechanism. I had to struggle a little bit sometimes to get it to pop free. Also, with the release lever depressed, I had some difficulty sliding open the clamps. This is not unexpected or disappointing -- I figure it will take a little practice to get good at releasing and sliding the clamps. The trigger action clamping is so convenient that its well worth learning how to finesse the other parts.

I am glad I got the 12" clamps. When I initially envisioned how I might use these clamps, I thought perhaps the shorter clamps would be all I needed and might be easier to wield. But then I realized I didn't know what I might actually need and I figured it was safer to have too much clamp than too little. Well, I ended up using these to clamp my work piece onto huge posts and to inset legs on a workbench, even the railing on some stairs. Having the extra throw was so helpful -- I was able to use all sorts of imagination for how to hold the work piece with these.

Invaluable when working alone.
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IRWIN Tools QUICK-GRIP SL300 Series Bar Clamp / Spreader, 12-Inch (512QCN)
This item: IRWIN Tools QUICK-GRIP SL300 Series Bar Clamp / Spreader, 12-Inch (512QCN)
Price: $18.02
Ships from and sold by Amazon.com