John Gill Commentary 2 Kings 25:17

"The height of the one pillar was eighteen cubits, and a capital of brass was upon it; and the height of the capital was three cubits, with network and pomegranates upon the capital round about, all of brass: and like unto these had the second pillar with network." — 2 Kings 25:17 (ASV)

(See Gill on 2 Kings 25:13)