וְלִפְאַ֤ת צָפוֹן֙ מֵאָ֣ה בָֽאַמָּ֔ה עַמּוּדֵיהֶ֣ם עֶשְׂרִ֔ים וְאַדְנֵיהֶ֥ם עֶשְׂרִ֖ים נְחֹ֑שֶׁת וָוֵ֧י הָֽעַמּוּדִ֛ים וַחֲשֻׁקֵיהֶ֖ם כָּֽסֶף׃
And for the north side a hundred cubits, their pillars twenty, and their sockets twenty, of brass; the hooks of the pillars and their fillets of silver.
Read kabbalistic (mystical) interpretation of Exodus 38:11: and classical mystical sources.