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on October 27, 2013
I've used my clamps a total of 4 times for simple 20min-1 hour gigs clamping cloth backgrounds to wires. 2 days ago I used them to clamp on to small PVC 1/4" pipe. Far from taxing their abilities... or so I thought. After about 2 hours of being clamped to the pipe one of the clamps suddenly snapped at the joint sending the 2 halves of the clamp missile-style in either direction, one leaving a chip of paint out of my wall and the other hitting my model in the face. While we were dealing with that, less than an hour later we came back to the room to figure out something new and apparently while we were out, another one had done the same thing! I'm lucky she's not going to sue me. I probably would if I were in her place for the photographer being so stupid as to buy these pieces of junk.
(I'll post pictures of the pipe and the broken pieces so you can see how little it takes for them to break)
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> 4 1/2" long X 3 1/2" high X 5/8" thick
> Jaws open to 1 3/4" (maybe 2" if you strain), but are probably best used to clamp a maximum thickness of about 1"
> Jaw pads 5/8" x 7/8"
> Closer than the pads the inside of the jaw can grip round poles 7/8" to ~1 1/4" in diameter
> The pads pivot, so they are parallel to each other when gripping, which (while providing a strong gap) spreads out the pressure and does not damage surfaces.
> The pads have a groove down the center, perpendicular to the clamps which might be useful for gripping 1/8" to 1/4" poles.

> The clamps I received are well made, and none are broken.
> I suspect that the reviewers who reported that they broke spread them too far---with the jaws open more than about an inch the tension is very strong. If you use them to clamp things less than about 1", I doubt that they would break.
> I'll report on my experience in the future.

> Click on “Stoney” just below the product title to see my other reviews, or leave a comment to ask questions.
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on January 18, 2013
I bought these clamps on January 6th 2013. I believe I received the clamps on January 9th. Which was fast for me I'll be honest. It is now January 18th 2013 and two of the clamps have broken. What I did was set up my green screen on a home built stand of PVC pipe. The PVC pipe is 1" in diameter. The clamps (all 6) had been holding my screen taut since January 12th. So not even a full week later, and 2 of these have broken. Not only that, but they appear to have flown across the room. They break at the handle and can't maintain a hold. Completely worthless. I wish the rating would have been lower on these things to have prevented me from buying in the first place.
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on March 14, 2017
Bought this to go with my green screen (https://www.amazon.com/Collapsible-Backdrop-Background-Photography-Television/dp/B01CY0OV26/ref=sr_1_1?s=photo&ie=UTF8&qid=1489507156&sr=1-1&keywords=Neewer%C2%AE+9+x+13+ft%2F2.8+x+4M+Photo+Studio+100%25+Pure+Muslin+Collapsible+Backdrop+Background+for+Photography%2CVideo+and+Television+%28Background+Only%29-Green) & stand (https://www.amazon.com/dp/B00E6GRHBO/ref=cm_cr_ryp_prd_ttl_sol_5).

The clamps are durable, strong, and hold extremely well. Call me pleased!
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on March 10, 2016
Oh man - these were perfect for holding up my custom sound foam panel I made up on a LimoStudio background stand.

At first I was disappointed, as these were smaller than the other clamps I had, and I was expecting the larger size. But this size was actually PERFECT for holding a backdrop on that LimoStudio stand, and they were exactly what I needed!
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on September 25, 2017
Clamp-wise worked as needed. But one of the kids at the party knocked the backdrop over and 2 of the 3 clamps shattered in multiple pieces upon impact on the gymnasium floor. I would have thought they could withstand something of that nature, but also don't have much experience with backdrops and clamps. So will likely spend a few extra bucks next time for actual heavy duty clamps.
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on February 26, 2015
These large clamps are heavy duty and keep a firm grip on the fabric that I use on my PVC-pipe photography backdrop stand. They are almost too stiff for me to open with just one hand, but they definitely stay in place once clamped. They are just the right size to clamp around either the 3/4" or the 1" PVC pipe. The teeth of the clamp don't actually come together when using the 3/4" pipe, but that doesn't seem to matter since the mouth of the clamp fits so snugly around the pipe.
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on August 12, 2017
Bought these clamps for my backdrop. I wanted to secure my backdrop more. They do feel cheap and plastic but don't let it deter you from buying it because I've used it several times on my backdrop and they have held up quite nicely! For the price, I would say get it so you won't end up with a droopy backdrop. No one likes droopy but they do like snoopy
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on May 20, 2016
Received these 4 clamps and immediately put them to use. I have a huge 10ft x 16ft Green Chromakey Chroma Key Muslin Backdrop Background Screen that I use on a heavy duty background holder. I noticed that only 2 clamps are more than strong enough to hold the ends of the backdrop up to the top. However, since it is fabric we are dealing with an additional one or 2 clamps were needed to reduce the amount of wrinkling and keep the fabric snugly against the backdrop holder bar. My initial impression of these were that the quality looked pretty low. Plastic construction with some pieces that looked off centered made me think these were definitely a no frills, no flashy features kind of product. I already had a few clamps that were all metal and very pleasing to the eyes. Once I put these clamps to use I would have to say that they outperform the flashy all metal clamps I’ve had for at least a decade. I received these clamps Sept 2015 and have had them holding up my heavy backgrounds nonstop since the time of this review. They are still going strong and providing the same gripping power as they did at first purchase.
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on November 26, 2016
I finally got around to hanging some muslin from my new LimoStudio Photo Video Studio 10Ft Adjustable Muslin Background Backdrop Support System Stand, AGG1112. The clamps gripped well and did a good job of holding the cloth to the stand. I could probably have bought something similar at Lowes or Home Depot for less money, but these do the job.
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