Relitec R 90 Degree Corner Clamp Set, Woodworking Tools, 8PCS

I purchased this set for corner clamps in my wood working and so far they work great. Recommended

Checking these with a precision machinist square I can see they aren't perfectly square. They have slight high spots near the the ends. Even with that they are still good for the woodworking that I do.

I love these. I use them all the time in my shop. Very practical to have around!

They are good and work just small.

Great product. Great price. Must have for all woodshops

They work fine just a LOT smaller than I expected.

I am very glad that I got these and the first thing I did was to check them with my machinist squares Starretts at 0.001 accuracy. Now here is the thing, looking at this as a X and Y position (left to right and front to back) the X and Y solid measuring sides on the 6” and 4” had a concave or inward to the center of the X and Y center area. Now as far as “”was the X and Y plain square?” The answer is yes but I didn’t see some of the perfect surface joining as others showed in their photos and to be honest, as a professional photographer this is not easy to Photograph because we are talking about hundreds of an inch in not perfectly square. Remember, this is plastic. It is solid feeling and almost difficult to bend (I didn’t want to break mine) so for 98% of the needs out there it will be fine. Wood workers will love it. But for me I either use the whole length of the measuring sides on nothing at all. In other words, don’t try to square a a 2”x3” item with a 4”x6” positioning square... use the smaller one. I will try to update this review with images and measurements on my straight steel edge with 0.001” accuracy over 24”. I think these are great and I would not hesitate to buy them again. My metal squares are the best but not as clamp friendly as these are. Buy them, you won’t be disappointed. This was the best deal I could find.

Just got my set and checked for square and every one failed! The outside were close, just a small gap which let the light shine through; was hard to tell with the naked eye though! The inside was more noticeable as they would have just shy of a 1/16 inch gap. I mostly make planter boxes so this is definitely good enough for me.