Exodus 36:32

And there were eight boards; and their sockets were sixteen sockets of silver, under every board two sockets.

And he made bars of shittim wood; five for the boards of the one side of the tabernacle,

And he made the middle bar to shoot through the boards from the one end to the other.

And he overlaid the boards with gold, and made their rings of gold to be places for the bars, and overlaid the bars with gold.