Exodus 26:19
with forty silver bases under the twenty frames—two bases for each frame, one under each tenon.
Berean Standard Bible
And thou shalt make forty sockets of silver under the twenty boards; two sockets under one board for his two tenons, and two sockets under another board for his two tenons.
You shall make forty sockets of silver under the twenty boards; two sockets under one board for its two tenons, and two sockets under another board for its two tenons.