They are tapered variations for the smooth-spinning ball bearing rollers from Item 15464 JR HG Alum Ball-Race Rollers 19mm (Ringless). Tapering them encourages the car to stay regarding system in terms of mounts the walls, with all the purpose of increasing your race summary rate!
• Tapered Aluminum Ball-Race Rollers x2
• Purple anodized finish.
• built-in 520 ball bearings.
• Screws and spacers to be used in attachment included.
• right for Mini 4WD PRO and Mini 4WD automobiles. Some numbers may necessitate modification.