Image Item No. Description By  4624  Wheel 8mm D. x 6mm Catalog: Parts: Wheel 2  56902  Wheel 18mm D. x 8mm with Fake Bolts and Shallow Spokes Catalog: Parts: Wheel 2  55982  Wheel 18mm D. x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Catalog: Parts: Wheel 2  60208  Wheel 31mm D. x 15mm Technic Catalog: Parts: Wheel 1