Black Thin Wheel/Pulley (Open Center) – 25mm
Small black wheel or pulley. A knex rod can fit through the middle and can be used in a pulley setup or as a wheel, however no tire fits properly on this piece because of how thin it is.
- 1.53 g
Black Narrow Racing Wheel/Hub – 50mm
Small Hub Light Gray – 18mm
Small Green Tire – 21mm