This was the appearance and structure of the wheels: They sparkled like topaz, and all four looked alike. Each appeared to be made like a wheel intersecting a wheel.
References for Ezekiel 1:16
As they moved, they would go in any one of the four directions the creatures faced; the wheels did not change direction as the creatures went.
References for Ezekiel 1:17
Their rims were high and awesome, and all four rims were full of eyes all around.
References for Ezekiel 1:18
When the living creatures moved, the wheels beside them moved; and when the living creatures rose from the ground, the wheels also rose.
Wherever the spirit would go, they would go, and the wheels would rise along with them, because the spirit of the living creatures was in the wheels.
References for Ezekiel 1:20