Three Jetstream SXR-5 blue 0.5mm ballpoint pen refills (for single-color pens) from Mitsubishi Pencil (uni), JAN: 4902778040973. These are oil-based ballpoint pen refills for Mitsubishi Pencil's multi-color/multi-function Jetstream pens, known for their smooth writing feel. The low writing resistance allows for smooth writing without applying much pressure. Please refer to https://www.askul.co.jp/v/68116/?searchWord=4902778040973&cateId=2&variationItemLImgPath=L1%2F7970768_l1.jpg. Also, try scanning the barcode or QR code photo with your mobile QR code reader. The outer box may have some dirt, so please refrain from bidding if you are concerned. Approximately 7g. Will be sent via regular mail (Japan Post).