Tamiya Grade-Up Parts Series TAMIYA 4WD MINI TUNE UP PARTS 19mm Black-Plated Plastic Ring Aluminum Bearing Rollers (Dish Type) 15426 These are genuine Tamiya products that have been modified. Parts originally included, such as bearings and screws, other than the rollers, are included. If you have a desired color scheme, feel free to ask. It is also possible to change from 19mm plastic rings to standard 19mm aluminum rollers with the same shape. These were processed using a high-precision Okuma machining center. Shipping will be via Yu-Packet Post. Please note that we cannot be held responsible for 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 individually made items utilizing my work experience. We appreciate your understanding. Since the item has been opened once and only the product has been taken out and repacked, please consider it as a used item. Processing may cause fine scratches, but we handle them with the utmost care. Please understand that these are individually made 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 for your interest.