I love these clips. Whenever I join two pieces of wood with pocket holes, it's hard to pinch them. I sometimes resort to screwing in other pieces of wood just to hold the pieces in place while I drive the screws. With these clamps I can clamp the pocket opening directly, it saves a lot of time and headaches. The clamps are very strong and easy to use. Simply insert the narrow end into the pocket opening and clamp. I highly recommend them.