HoracioAR
They are the only blade I have used in my Gillette Fat Boy and with the razor set on 6 the shaves have been smooth and close. I do not know how they would perform in a DE that is not adjustable. I had the thought, rightly or wrongly, that with an adjustable DE the make of blade does not matter as much because you can dial in how much or little aggressiveness the blade will give you. For me going higher than 6 makes then way too aggressive.
Bob