These Housolution right angle corner clamps are very well made. The aluminum alloy unit is very sturdy and cleverly designed so that it can be used with both the same size wood or two different thicknesses wood or other material pieces.The large handle on each clamp makes tightening a breeze, resulting in a perfect 90 degree joint. Having the set of 4 is ideal for building frames, so you can glue/join all corners at the same time.

Very nice set, you can feel the quality, these will do! HEAVY DUTY

I’m giving this 4-stars just because it’s exactly the same as at least one other that cost $5 less. Performance, and price compared to others that are probably made in the same factory but sold as a different brand here on Amazon, is still 5-stars.Pictures are of this product and the other one that costs $5 less.ACCURACY/PRECISION: I used my Milwaukee aluminum speed square and my Husky digital caliper to test for square and uniform thickness of material. I’ve verified the square and caliper against machining tools and through plenty of projects I’ve used them on that ended up square and level (using a level, too, of course). These clamps will work perfectly fine for what I'll use them for - woodworking (picture frames to large projects), general home carpentry (e.g. hold onto a stud while positioning a cross-support), and light welding of square tube steel.NOTE WHEN MEASURING: The head pivots on essentially all 3 axis. Because of this, the square must be clamped plumb and square with respect to the clamp’s ball head and surfaces. If the square is off from this point, when tightened, it will pivot as it is supposed to. Then, because it is no longer plumb, you may see a slight, roughly 1/32" gap. This is an artefact of improper measuring, not the clamp. Keep that in mind as you read reviews and look at pictures. And either way, 1/32" is acceptable in construction, finish carpentry (some demand 1/64"), and in just about every project we do outside very fine detail work (which you may use other types of clamps for anyways).WORD OF CAUTION: Don't rely on reviews to determine whether the product YOU receive is square. Check them yourself while in the return period using a trusted measuring device. Tools like a speed square (L-shaped) and square (triangle) are two of the most basic and heavily used tools in any builder/carpenter/woodworker, etc. toolkit. I'd say that someone purchasing these probably should have these two tools first. With some clamps they can even do the same things these clamps do (albeit with a little more effort). They can in fact do all sorts of great things beyond just checking for square or making quick measurements instead of using a tape measure (guide track for any circular saw to make perfect cuts, etc.)OTHER OPTIONS: After researching clamps, I purchased this one and "another brand" that looks identical, but was sold by another vendor. We're all familiar with Amazon selling the same thing with a different brand logo on it. This case is no different. After receiving them, I can say that the clamps are identical and probably were made in the same factory. The boxes have slight differences, though the colors, fonts, general design, etc., have no discernable differences to my eye. Because the difference is only 5 bucks, I'll keep them both and buy two more of the less expensive one. I'd venture a guess that some of these that are a different color are also made in the me place. I wanted grey because it won't show scratches and wear as much as aluminum of a another color.

Great way to keep my corners square.

Built very solid and easy to use.

I've tried working with 1/2", 3/4", 1" and 1-1/2" wood pieces and have yet to find any that these would hold firmly and tightly together. It seems the jaws are not plumb and true. Also, the handles are so long you corners must be almost 36" apart to be able to use two of these on opposite angles. Save your money and get the Harbor Freight exterior clamps.6/14/23 Update: So, they aren't as bad as my initial impression was. The long handles are still an issue with using them to build apairy woodenware, which was the reason I bought them in the first place. If you were building a bed or something else large, I'm sure the handles would not be an issue. Also, I have learned to finaggle the two pieces of wood in order to get better alignments, so I added two more stars.

Affordable corner clamps that give excellent results. Assembled 10 drawer boxes that gave uniformly good joints. I would recommend these to anyone needing this type of clamp. Can't comment on using wood greater than 1" but these certainly were up to the task that I had.

These made a dreaded project super easy. I wanted to build some frames for acoustic panels out of pine bars that were not super straight and accurate. With these clamps, I was able to "force" my wood into the right position to get reasonably accurate right angles. They're a little wobbly before you tighten them, but once in place, they hold on firmly. This was not a high end application, however. I imagine if you wanted picture frame quality, you'd have to have very precise miter cuts at the corners. I sort of bought these clamps on a whim, and I'm glad I did. I can only imagine how difficult this would have been without them.

Ne pas hésiter si vous en avez besoin, je m'en sert pour la soudure de tube carré 40x40 coupé à 45°, l’équerrage est parfait ! Juste besoin de faire un calage des tubes pour compenser l’épaisseur de l'étau. Je recommande sans problème et je compte même en racheter un deuxième !!!

Diese Winkelklemme ist ein unersetzbarer Helfer bei Holzarbeiten. Robust und mit großer Spannweite. Gerade bei Leim- und Schraubarbeiten ersetzt diese Winkelklemme den zweiten Helfer.L.Z.

buon prodotto, materiale di buona qualità, e sufficientemente robusto, le angolazioni non sono precisissime al grado ma per uso amatoriale sono perfette.

Ces étaux sont franchement assez gros et costaux pour faire tenir de gros morceaux de bois entre eux avec un rattrapage d'angle.C'est un bon produit que je recommande pour sa précision, sa facilité d'utilisation et sa solidité.Il faut penser à prévoir un rangement assez grand pour les protéger car ce ne sont pas de petits étaux et j'en ai pris 4, ça prend de la place dans une boite à outil de grande taille !

Works amazing! Joints are perfect. Super easy to use.