דברי הימים ב ד:יב פירוש: רש״י

and the two bowls and chapiters atop the pillars for the two pillars.

and the networks were two These are the chains mentioned above (3:16), and the proof that it is so is that neither here nor in Kings does he mention the chains anywhere.

to cover the two bowls of the chapiters to cover the hollow of the chapiters with chains, and those branches were like palm branches, as I explained (ad loc.).