Exodus 36:38

38and its five pillars with their hooks. He overlaid their capitals, and their fillets were of gold, but their five bases were of bronze.

Jeremiah 52:21

21As for the pillars, the height of the one pillar was eighteen cubits,
A  cubit was about 18 inches or 45 centimeters
bits circumference was twelve cubits, and its thickness was four fingers, and it was hollow.
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