Exodus 38:17-20

The 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. The 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, with four posts and four bronze bases. Their hooks and bands were silver, and their tops were overlaid with silver. All the tent pegs of the tabernacle and of the surrounding courtyard were bronze.