Jeremiah 52:21

52:21 Each of the pillars was about 27 feet high, about 18 feet in circumference, three inches thick, and hollow.

Jeremiah 27:19

27:19 For the Lord who rules over all has already spoken about the two bronze pillars, the large bronze basin called ‘The Sea,’ and the movable bronze stands. He has already spoken about the rest of the valuable articles that are left in this city.