Ah well I don't have IO and I think it worked still ? But yeah, i'm too lazy to swap now xD

@Nirahil & AthinCZ, correct the IO is Industrial Overhaul by Clockwork. It changes the component requirements to steel plate.
@FyerbrandTactics_ttv, the yellow pipe part (see second image) extends beyond the centerline and therefore makes a simple mirroring harder to not look weird. So, I don’t think I will be making a block like that in the foreseeable future, sorry.

Did you ever get the urge to make a conveyor pipe with an "end" on both ends? I know I do all the time. Thank you for the flanges.

@Nirahiel I would assume Industrial overhaul, but I don't know for sure.

What does "IO" version do that the other one doesn't ?