These mounts have deep pockets for the screws to sit properly. Without it, your going to be buying it at a hardware store right after you realize you have a problem reaching the screw I. Your new mount.
I have not used the driver yet, but have purchased three gun mounts & a mag mount and the are great. So clean, simple and useful. Quick shipping, great product, easy install and quick response to a question I had. I highly recommend this company and their products.