You can, but I don’t recommend it for straight razors. These varieties of stones consider a good deal of material. Some use it to set the bevel on their blades, but most use a reduced grit (1k), Whetstone. The single I specifically recommended (D8C) is a coarse stone, resulting in chips in your blade. I suggest the Waterstone I recommended, but if you’re dead set on using a DMT stone, you can try out the extra-fine stone (D8EE).