Exodus 27:10

and the twenty pillars thereof, and their twenty bases of copper, the hooks of the pillars and their connecting-rods of silver.

Exodus 26:19-21

And thou shalt make forty bases of silver under the twenty boards; two bases under one board for its two tenons, and two bases under another board for its two tenons.

Exodus 36:38

and its five pillars with their hooks; and he overlaid their capitals and their connecting-rods with gold; and their five bases were of copper.

Jeremiah 52:21

And as to the pillars: the height of one pillar was eighteen cubits, and a line of twelve cubits encompassed it; and the thickness thereof was four fingers: it was hollow.

Treasury of Scripture Knowledge

Summary

And the twenty pillars thereof and their twenty sockets shall be of brass; the hooks of the pillars and their fillets shall be of silver.

Sockets shall be of brass

Fillets shall be of silver

Bible References

Sockets shall be of brass

Exodus 26:19
And thou shalt make forty bases of silver under the twenty boards; two bases under one board for its two tenons, and two bases under another board for its two tenons.

Fillets shall be of silver

Exodus 36:38
and its five pillars with their hooks; and he overlaid their capitals and their connecting-rods with gold; and their five bases were of copper.
Jeremiah 52:21
And as to the pillars: the height of one pillar was eighteen cubits, and a line of twelve cubits encompassed it; and the thickness thereof was four fingers: it was hollow.