The rod I've ordered was too short and it's made of quite soft metal, not really hardened steel. LW user @Constabulary who did an amazing job restoring my skiving machine, was cutting the rod, glued and pinned on a tube to extend it: not symmetric but otherwise it could come in touch with the bell knife.
Maybe you can find the right size part for your machine. The one I've order had 9,3 cm total length.
But before ordering I would follow Brian's advise, he has a lot of experience with the skivers, helped with mine too.