Shemot 38:5-7

Orthodox Jewish Bible

⁵ And he cast four rings for the four ends of the mikhbar of nechoshet, to be housing for the carrying poles.

⁶ And he made the carrying poles of acacia wood, and overlaid them with nechoshet.

⁷ And he put the carrying poles into the rings on the sides of the Mizbe’ach, to bear it withal; he made the Mizbe’ach hollow with luchot.