Thank you for viewing. This is a set of 2 x 13mm all-aluminum bearing rollers (black) for Mini 4WD. They have been anodized black and then drilled using a dedicated jig. Although they are new and unused, please note that there may be some scratches or scuffs on the tags or bags due to storage, as well as some burrs or initial scratches from the drilling process. Instant purchase is OK, but please refrain from returns or exchanges to prevent any trouble. #Tamiya #Mini4WD #13mmAllAluminumBearingRoller #Black