Pentel Fude Pen Pigment Ink Cartridge 7-Piece Set ④ 〇Pentel Fude Pen Pigment Ink, Black Ink for Paper Part Numbers: FRP-A (Old) 3 pieces, XFRP-A (Current) 4 pieces Compatible Products: XFP5M (Medium), XFP5F (Extra Fine) Type: Unscrews by turning right This is a dead stock item I received from an acquaintance at a stationery store. Although it is unopened and unused, it has been stored for a long time, and the packaging has some cloudiness, etc. I do not own the pen body, so I have not been able to test it. Please purchase if you understand this.