Image Item No. Description  50862  Wheel 15mm D. x 6mm City Motorcycle Catalog: Parts: Wheel  60208  Wheel 31mm D. x 15mm Technic Catalog: Parts: Wheel  56908  Wheel 43.2mm D. x 26mm Technic Racing Small, 6 Pin Holes Catalog: Parts: Wheel  64712  Wheel Hard Plastic with Small Cleats and Flanges Catalog: Parts: Wheel