Single QBO Cube Caster Base
When you need storage to go, add a Single Cube Caster Base to your cube. It provides a stable, mobile platform for up to four stacked cubes. Attach the caster base to the back of a single Galvanized or Enameled Cube for a stylishly mobile toy or craft storage upright chest. For protection from the elements, it's coated with rust-resistant zinc.