Mini 4WD 2-stage aluminum rollers, 12mm-13mm. Color is red. These are not anodized, but genuine Tamiya parts. These are used, so I've marked them as slightly dirty, but please check the condition carefully in the photos. Also, although they are used, I will include bearing rollers and accessories as a set, but please consider them as extras. Please consider the above before purchasing. I am selling these because I have retired from Mini 4WD. If you have any concerns, I will add more photos, so please understand that I will not accept cancellations after purchase.