This is a set of 30 Mobilon Bands. Nisshinbo MB-9033TA-100G Mobilon Band 90 x 3 x 0.3 Transparent/Washing Type 100G Ideal for repairing the Famicom Disk System. To find out how to replace the Disk System belt, search for "Disk System Belt Replacement". There are detailed instructions with photos. Also, the belt part of the Twin Famicom has the same design, so this product can be used as a substitute. You can get a combined discount if you purchase two or more game software/accessories. (200 yen off for purchasing 2 items, 400 yen off for purchasing 3 items, and 200 yen off for each additional item.) Please let me know in the comments. You can check the list of items for sale here: ↓ #YamaNoGameShop #YamaNoDiskSystemCorner Shipping will be via Rakuraku Mercari Bin with tracking. Delivery will be the next day or the day after the next day. (If the shipping address is Okinawa, please let us know before shipping, and we will write "No batteries" on the item name so that it can be transported by air. If you do not contact us, it will be shipped by sea, and it will take about a week to arrive.) Thank you. #DiskSystem #TwinFamicom #Famicom #FamilyComputer #NewFamicom #MobilonBand #Nintendo #Sharp #AlternativeProduct #MadeInJapan #YamaNoGameShop #YamaNoDiskSystemCorner