|This roller set features combined 13mm and 12mm rollers. The 13mm rollers are placed at the bottom and work as guide rollers in straight sections, whereas the top 12mm rollers work to assist your machine through corner sections. Together as one unit, these rollers have a great stabilizing effect which helps keep your car on the course where it belongs! In addition, these aluminum rollers feature a cool black anodized finish. 520 ball bearings included. |
★Compatible with: Mini 4WD PRO and Mini 4WD machines.