These are replacement ink refills from MUJI. I'm selling them because I no longer need them. If you're interested, I also have the 0.38mm pink and light green ballpoint pen bodies, which have been used, so please feel free to ask. 〇 Replacement Ink Refills: Smooth Gel Ink Ballpoint Pen ・Sakura (Cherry Blossom) 0.5mm 〇 Replacement Ink Refills: Gel Ink Ballpoint Pen ・Pink 0.38mm ・Light Green 0.38mm ・Sky Blue 0.38mm x 3 ・Red 0.5mm The replacement ink refills are new and unopened, but please understand that they have been stored by a private individual before purchasing.