1 Kings 7:31-34

31And the water cart’s opening inside the crown on top was eighteen inches wide. The opening was round, made as a pedestal twenty-seven inches wide. On it were carvings, but their frames were square, not round.

32There were four wheels under the frames, and the wheel axles were part of the water cart; each wheel was twenty-seven inches tall.

33The wheels’ design was similar to that of chariot wheels: their axles, rims, spokes, and hubs were all of cast metal.

34Four supports were at the four corners of each water cart; each support was one piece with the water cart.