Exodus 38:19-21

Young's Literal Translation

¹⁹ and their pillars [are] four, and their sockets of brass four, their pegs [are] of silver, and the overlaying of their tops and their fillets [are] of silver;

²⁰ and all the pins for the tabernacle, and for the court round about, [are] of brass.

²¹ These are the numberings of the tabernacle (the tabernacle of testimony), which hath been numbered by the command of Moses, the service of the Levites, by the hand of Ithamar son of Aaron the priest.