These lightweight yet tough 19mm aluminum rollers function built-in 520 ball bearings to provide your Mini 4WD machine with smooth movement. Also, they may be helpful for both front part and right back roller setups. The parts have an anodized blue finish for an incredible look!
• 19mm Aluminum Ball-Race Roller x2
• Attachment screws included.
• right for all Mini 4WD and Mini 4WD professional automobiles.