With this project set for right-angle clamping on all 4 corners, you are optimally equipped to fix and clamp shelves, picture frames and pieces of furniture. The set includes 4 corner clamps for boards with a thickness of 10-22 mm and can be mounted and released with only one hand. Thanks to the spring mechanism, they automatically adapt to the board thickness. It is also possible to clamp together boards with different thicknesses. The clamping surfaces have a soft, non-slip contact surface that fasten the workpiece firmly in place without making pressure marks. 4 practical mounting aids for screwing or gluing boards together at a 90° angle.