Great article, it's not hard to guess an Irwin type offering, a name I trust and an article I've used. And although this Irwin model is identical except for the color, not even on SALE, it was still at a reduced price from what I paid. I used to need a few pairs, now a few are enough. I broke one of the two a few years ago so this was a great opportunity to replace it. That being said, I was discussing this with someone who thinks I've had this item for about 20 years. Great article, I used them to create. Canvas and fabrication of frame components for the final frame. I suspect window frames or repairs or many types of restorations might need something like this. Although I've used them with wood, I believe they will work with similar sized aluminum projects as well.