Exodus 27:10-12

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. And likewise for the north side in length there shall be hangings of an hundred cubits long, and his twenty pillars and their twenty sockets of brass; the hooks of the pillars and their fillets of silver. And for the breadth of the court on the west side shall be hangings of fifty cubits: their pillars ten, and their sockets ten.