As a DIY enthusiast, I refused to buy such a special clip for a long time. I mean, for $20 I can get 2-3 general purpose clamps from Harbor Freight. I mastered the difficult connection of the corners, which didn't work out so well. However, filler and sandpaper are required for this. As I gained experience in woodworking, I improved my tools and jigs. I finally made up my mind and bought this clip. As soon as I used it I cursed myself for not buying it sooner. That's all the other reviewers said. Powerful, durable and easy to use. Best of all, it holds the pieces together tightly. Free hands! This and the Kreg pocket hole gauge I bought opened up all sorts of woodworking possibilities for me.