Thank you for viewing! Beautiful anodizing is a given. In addition to that, I want to offer customers the following: "roller performance" and "ease of use after purchase." * In addition to Microlon coating on the 520 bearings, I aim for rollers that spin freely by utilizing my unique bearing rotation technique used during Katsufura (a type of mini 4WD racing). (There are individual differences in 520 bearings, and some may not spin easily. I hope you understand that this means maximizing the original rotational performance of those bearings.) * 520 bearings are already installed (with pressure release) and will be shipped ready to use. (Most anodized rollers currently on sale are shipped without the 520 bearings removed, pressure released, or even inserted.) Tamiya Genuine Products 13mm All Aluminum Bearing Rollers: 2 bags 19mm All Aluminum Bearing Rollers: 1 bag The above rollers have been lightened, black anodized, and the 520 bearings have been treated with Microlon coating. * In the pre-anodizing process, I use a 1μm compound and polish them using a unique method until they have a glossy surface. It takes time, but my experience has shown that handwork produces the most beautiful finish. I can't compromise on this to maximize quality!! The anodized color is applied on top of this glossy surface. This dramatically improves the gloss and color development. * Microlon coating has been applied! This improves rotational performance! Furthermore, a suitable amount of Yutori Oil 03PRO has been added to increase longevity. Accessories will also be included and shipped in a bag. The following points to note: When anodizing, it is necessary to create contact points, but the area near the contact points will not be anodized. I have made the contact points near the 520 bearing insertion holes to make them less noticeable, but there may be areas nearby that are not anodized. I try to place them on the back side, and on the front side, I make them so that they are hidden when the bearing spacers are attached.