This might be a limited-edition version of the popular 19mm roller as well as its outer plastic rings also come in orange color. The 5-spoke rollers are made from lightweight, tough aluminum, with integral ball bearings, they provide a smooth trip.
Rollers are utilized in Mini 4WD devices allow faster cornering rates with minimal rate loss. 19mm could be the biggest roller available, making most Mini 4WD machines because wide as legitimately permitted utilizing official Tamiya guidelines.