Mac Pro Wheels Kit

The Mac Pro Wheels Kit is a set of user-attachable wheels designed by Apple for the 3rd-generation Mac Pro. It features rubber wheels attached to stainless steel hardware. The wheels will cause a Mac Pro tower to stand about 1 inch taller than one that is using the Mac Pro Feet Kit. The Wheels Kit is available as an Apple online store option for the Mac Pro for an additional 400, or $699 when purchased separately.

Reception
Apple's Wheels Kit was criticized for its high price, leading to the development of third party options at much lower cost.