This is an old-style scoring pen, as used by Kumon. Includes cartridge and tip. Please consider purchasing only if you understand that this item has been stored at home. A part of the ink replacement mechanism is chipped. Please check the photos. Regarding the included ink, unopened items and those whose usage cannot be confirmed may rarely have initial defects or ink deterioration. The ink set and check have been performed once. Please note that we do not accept returns or exchanges to prevent replacement, even if there is a defect.