Thank you for viewing. This is a direct liquid ink cartridge specifically for the Pilot whiteboard marker "Board Master S". [Set Contents] ・Black: 7 ・Red: 6 Total of 13 cartridges. [Condition] New and unused. Please understand that this item has been stored at home before purchasing. Waterproof packaging will be used for shipping. The shipping method may be changed between Rakuraku Mercari and Yu-Yu Mercari depending on the situation. I pay close attention when listing items, but there may be omissions or errors. Please ask any questions you may have. However, I may not be able to answer questions about the technical details of the product. Thank you for your understanding.