Hi all new to the forum and stumbled on this thread so I guess my question is obviously they don’t use the DE blades I’m guessing. What is the advantage of a single edge razor over a double edge? not trying to be a smart *** or anything like that, I’ve just never seen these razors before that I know of and am genuinely curious. It seems with DE you would get more life out of a blade. So help me understand the +/- of these razors.