Exodus 38:17-20

17The bases for the posts were bronze. The hooks and bands on the posts were silver, and their tops were overlaid with silver; so all the posts of the courtyard had silver bands. 18The curtain for the entrance to the courtyard was made of blue, purple and scarlet yarn and finely twisted linen—the work of an embroiderer. It was twenty cubits long and, like the curtains of the courtyard, five cubits high, 19with four posts and four bronze bases. Their hooks and bands were silver, and their tops were overlaid with silver. 20All the tent pegs of the tabernacle and of the surrounding courtyard were bronze.