Albert Barnes Commentary 1 Kings 7:16

"And he made two capitals of molten brass, to set upon the tops of the pillars: the height of the one capital was five cubits, and the height of the other capital was five cubits." — 1 Kings 7:16 (ASV)

The general character of the capitals—their great size in proportion to the shaft (a one-to-two ratio) and their construction from two quite different members—reminds us of the pillars used by the Persians in their palaces. These were certainly more like Jachin and Boaz than any pillars that have survived from antiquity. The ornamentation, however, seems to have been far more elaborate than that of the Persian capitals.