Great screws and drivers- I wish I had discovered these years ago. I have lost count of the number of times I have dropped a screw from my drill driver or even the screwdriver, up on a ladder or at my bench. These screws eliminate that problem. See Robs Demo with the screws on YouTube. I tried it myself because I really didn’t believe they would stay on the driver that well. I will only be using these types of screwdrivers from now on. James Dietrich.