I don't know the specifics. It's new and unused, but it seems to be an old item. It's a pen that uses ink filled into an ink tank. For those who like it, please take it. I will ship it via post. 0.2mm precision drafting pen, with a convenient carrying case. - Brand: EROGRAPH - Model: 0.2mm - Type: Drafting pen - Accessories: Case Thank you for looking.