Tamiya Grade-Up Parts Series TAMIYA 4WD MINI TUNE UP PARTS Aluminum Roller Set 13mm 15437 These are genuine Tamiya products that have been modified. Parts originally included, such as bearings and screws, are included, excluding the rollers themselves. Please feel free to ask if you have a desired color scheme. Machined using a high-precision Okuma machining center. Shipping will be via Yu-Pack. Please understand that we cannot be held responsible for accidents during shipping. Due to work commitments, shipping will be on weekdays. Multiple purchases are also possible. Please inquire with your desired quantity, etc., via the question function. We will offer a discount for bulk purchases. These are individually made products utilizing my work experience. We appreciate your understanding. Please consider these as used items, as they have been opened once to remove the product and then repackaged. Minor scratches may occur during processing, but we handle them with the utmost care. Please understand that these are individually made products and accept them with no claims and no returns. If you would like a custom, one-off shaped roller, please inquire via the question function.