This quick release corner clamp is lightweight and easy for single‑handed operation. It is good for fast and simple fixing of boards and frames at an angle of 90 degree. The adjustable jaw design allows it fit for boards with a thickness of 3⁄16”‑ 7⁄8” for 90 degree corner and T‑joints, even with different board thicknesses. The strong flexible spring helps keep boards sturdy in place when screwing or gluing them together. It is a perfect tool for small wood working or wooden DIY project, such as to build wooden boxes, picture frames, bookshelves, dresser drawers, etc.