Tamiya Grade Up Parts Series TAMIYA 4WD MINI TUNE UP PARTS 19mm Aluminum Bearing Rollers with Plastic Rings (Dish Type) 15426 Feel free to ask if you have a preferred color scheme. It is also possible to change from 19mm plastic rings to 19mm aluminum rollers of the same shape. In that case, please contact me before purchasing. These are genuine Tamiya products that have been modified. Parts originally included, such as bearings and screws other than the rollers, are included. Machined using a high-precision Okuma machining center. Shipping will be via Yu-Packet Post. Please note that we cannot be held responsible for any accidents during shipping. Due to work commitments, shipping will be on weekdays. For multiple purchases, shipping via Sagawa is also possible. In that case, please inquire with the desired quantity. These are personally made items utilizing my work experience. We appreciate your understanding. The item has been opened once, and only the item has been taken out and repacked, so please consider it as a used item. Fine scratches may occur during processing, but we handle them with the utmost care. Please understand that these are handmade items and we do not accept claims or returns. If you have any requests for your own original shapes, please inquire. We will do our best to accommodate your desired design. Thank you.