Tamiya Grade Up Parts Series TAMIYA 4WD MINI TUNE UP PARTS Aluminum Roller Set 13mm 15437, 2-stage 15398 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, please feel free to ask. Machined using a high-precision Okuma machining center. Shipping will be via Yu-Packet Mini. Please note that we cannot be held responsible for accidents during shipping. Due to work commitments, shipping will be on weekdays. Multiple purchases are also possible. In that case, please inquire with the desired quantity, etc. We will sell at a discount for bulk purchases. These are individually made products, utilizing experience gained from work. We appreciate your understanding. Please consider these as used items, as they have been opened once to remove the items and then repacked. Fine scratches may occur during processing, but we handle them with the utmost care. Please understand that these are individually made products and we do not accept returns or claims. If you would like custom-shaped rollers, please inquire.