2Pcs 90 Degree Positioning Right Angle Clamps 5.5" Aluminum Alloy Woodworking Carpenter Corner Clamping Square Tool for Picture Frame Box Cabinets Drawers (2Pcs Red)

I've built numerous cabinets, frames, and drawers with this to date, and these clamps have been absolutely essential in building everything square. I don't even know what you'd substitute this level of precision with (another piece of wood?), but if you're as OCD as I am, I would opt for these every time.

Yep makes a right angle and holds it.

The red aluminum pieces are very close to perfectly square and I am happy with those. Two of the threaded studs are not. They still work, but with the slight angle I could see it leaving some marks on wood when clamped tightly. I can throw it in a vice and bend it straighter, but still a little disappointing. Can't beat the prices, hence only removing one star.

Needed an item like this to get truly square covered boxes and frames. These do a great job of that at a very reasonable cost.

I haven't been able to put them to full use yet. Waiting for the price of lumber to drop a bit before I start the next project.

I love it, but it costs way too much for what you get. You might consider a different item that costs less. Quality product though.

The claps are not square

Twice the product at half the price of Name Brand. My husband has used them for more than one project and is very happy.