Verses with the word undersetters in the Old Testament (2 verses):

1 Kings 7:30
And every base had four brasen wheels, and plates of brass: and the four corners thereof had undersetters: under the laver were undersetters molten, at the side of every addition.

1 Kings 7:34
And there were four undersetters to the four corners of one base: and the undersetters were of the very base itself.