I use traditional right angle clamps to join boards at 90 degree angles and while they work for any type of joinery they take time to install as we have them for perfect alignment the boards when tightening the clamps. But when I use pocket hole joinery it takes less than 5 seconds to hold the boards together with these clamps because the clamps automatically align the boards for me. Alignment will also be more accurate if we use 2 clamps along the same edge. They are easy to use and have strong clamping force. Must have if you use a lot of pocket holes for your projects.