Jr Hg Alum Ball-Race Rollers 19Mm Tapered Ringless/Purple

Description

These are tapered versions of the smooth-spinning ball bearing rollers from Item 15464 JR HG Alum Ball-Race Rollers 19mm (Ringless). Tapering them encourages the car to stay on the course when it mounts the walls, with the aim of raising your race completion rate!