The four wheels were under the panels, and the axles of the wheels were attached to the stand. The diameter of each wheel was a cubit and a half.
NIV
Under the borders were four wheels, and the axles of the wheels were one piece with the base. And the height of a wheel was a cubit and a half.
AMP
And under the borders were four wheels; and the axletrees of the wheels were joined to the base: and the height of a wheel was a cubit and half a cubit.
KJV