


Hi. The flexible one with blue and red marks is because it is used for hot and cold water. You can clean the bronze thread with a wire brush. The remains you find will be the threads of the flexible too tight. Salu2
Perhaps remnants of thread sealant. Do not you remember that you put it when installing it?
I put Teflon and I screwed it up, that's all. Tomorrow I will try to pass a bronze kitchen sponge, if it does not work I will be able to use the screwdriver as Plan B.
You don't need a screwdriver, but you can use one between threads with a nut, or an iron nipple, as follows, with a metal saw, you make longitudinal cuts, (three or four), on the beginning of the thread, With work and effort you try to screw it into the female you have on the wall, when you do it, you will have rectified the female's fillets and bye bye. luck
Confirmed, with the attached photo you can see that they are thread remains of the flexible. And the cleanliness you did was barbaric. I'm glad. Regards
Thanks, I tried with the bronze sponge and also with a nail (to try to emulate the suggestion of SERVIMAT1. The solution was finally to give it with a screwdriver and it was hitting it very gently with a hammer, it was a tera of about 30 minutes and the Work went pretty well, there are some manufacturers who have no scruples.