Erasable ballpoint pen using water-based gel ink. Contains 9 pens. - Brand: PILOT - Model Name: FRIXION BALL KNOCK - Color: Black - Pen Tip Thickness: 0.5mm - Product Code: LFBK-23EF- Other colors of Frixion are also available. Stationery items are also available. If you purchase multiple items, we will offer a 200 yen discount, so please take a look. These items have been stored at home for a long period of time, so we appreciate your understanding. We cannot accept claims or returns after the product has been shipped. Thank you for your understanding. Thank you for looking. #ErasableBallpointPen #GelInk #Frixion