This is a set of 3 packs of 5 black refills (SXR-80-05) for the Mitsubishi Pencil Jetstream multi-pen/multi-function pen, with a ballpoint diameter of 0.5mm. Individual sales are not available. Although these are new and unused, they were displayed in a store. Also, returns and cancellations are not accepted, so please make sure to check the compatibility of the refills carefully. Regular price: ¥550 (tax included) per set If you would like to use the post office/convenience store pickup option, I will change the shipping method, so please comment in the comment section before purchasing. uni jetstream 4&1 Refills Refill