Exodus 38:17-20

The sockets for the support poles were made of bronze, the hooks of the support poles and their connecting rings were made of silver; and silver overlaid their tops. All the support poles of the court had silver connecting rings. The screen (curtain) for the gate of the courtyard [on the east side] was the work of an embroiderer, in blue, purple, and scarlet fabric, and fine twisted linen; it was twenty cubits long and five cubits high, corresponding to the curtains of the court. Their four support poles and their four sockets were bronze; their hooks were silver, and silver overlaid their tops and their connecting rings. All the pegs for the tabernacle and the court were bronze.