1 Kings 7:15-16

He cast two pillars of bronze. Eighteen cubits was the height of one pillar, and a line of twelve cubits measured its circumference. It was hollow, and its thickness was four fingers. The second pillar was the same. He also made two capitals of cast bronze to set on the tops of the pillars. The height of the one capital was five cubits, and the height of the other capital was five cubits.