The opening to each water cart inside the crown on top was one cubit wide, with engravings on the opening. The borders to the frames surrounding the opening were square, not round.

Hiram also made ten bronze water carts. Each one was four cubits wide, four cubits long, and three cubits high.

Each cart had four bronze wheels equipped with bronze axles with four support feet. Beneath the basin were cast support structures made like wreaths on each side.

Four supports stood at the four corners of each cart, built into the carts themselves.