0.38mm ballpoint pen refills. Set of 5 refills in red, blue, and black, offering a smooth writing experience. - Model: SXR-38 - Size: 0.38mm - Brand: Mitsubishi Pencil - Type: Ballpoint pen refills - Quantity: 5 refills each of 3 colors - Retail Price: Approximately 1000 yen I am selling these because I purchased the wrong type. Only one red refill has been opened, and it is missing its cap. Including the opened one, all refills are new and unused. If you are interested in purchasing only some of the refills, please leave a comment. Thank you for looking.