Oh, okay. I have another make so I took the screw out of it & although pillar looking, the pitch was different from the Lecoultre so no telling what threads are in it. I have another 2 day set but a different maker, Veritable Vincent & it has a screw around a .60mm pitch & 2.8mm diameter. I guess if you could get your hands on some metric screws & they them carefully so you don't damage the threads on the razor. If you find one that fits, cut the head off 7 make a small slot in it for the screwdriver. That is how all of these are, with no heads on them. Kinda like a long set screw.