Blue=47D, Grey=49D, Cream=53D, Yellow=57D, & White=60D

The Giotto 57&58mm Professional FreeStyle Wheels provides a less expensive (than the Urethane counterparts), yet, very high quality wheel, which is used on many types of skating surfaces including standard wood floors coated with plastic or poly urethane, but also unusual surfaces like, tile type basketball and volleyball courts, tennis courts (Indoor or outdoor), and concrete or terrazzo surfaces