Very disappointed with this product. I was really hoping this would help me find a quick way to join 90ยฐ. I was really hoping this would help me find a quick way to join 90ยฐ. When I use it to clamp, it pulls the wood apart and separates it. This does not allow good gap formation. It also doesn't shuffle the word evenly. It contracts at the top of the joint and opens at the bottom of the joint. In addition, the small structure does not support the backless connection, making it difficult to install the wood properly.