About this product [Material] Ebonite [Method] Cartridge/converter dual-use type (European international standard) [Body size] Barrel diameter 15.3mm x barrel length 154.5mm / 25g [Nib] #6 Jowo stainless steel [Pen core] Plastic [Nib] The engraving on the nib may change without notice. Thank you for your understanding. The nib in the image is a reference photo. The nib size is the size of the listing title. Please check the Photo. We cannot change an address after the order has already been placed. We provide valid Tracking Numbers for all orders. If you have any questions or issues, we are at your service. We will reply to your question or invoice within 3 days. We can’t not reply gifts or unreasonable requests such as declared amount.