OverEZ Chicken Coops are heavy-duty and can be difficult to move because of their quality construction. The OverEZ Chicken Coop Wheels allow you to move your coop throughout your property with ease. Designed to fit the Coop in a Box, Small, Medium, and Large Chicken Coops. *Not designed for use on the XL, Walk In or Jumbo Chicken Coop. Plus, they give your poultry friends new ground to explore.