Mitsubishi Uni Jetstream replacement ink refills. All black. 0.38mm: 5 new refills 0.5mm: 5 new refills and 4 refills that have been opened. Price negotiations are not accepted. Please be aware that I will not respond to comments asking for a price reduction. *Shipping during the New Year's holiday* It may take several days to ship after purchase. Shipping will be via Yu-Packet Post, but delivery may be delayed compared to normal due to the postal service's delivery status. Please understand this in advance. Please consider purchasing only if you understand that these items are stored at home. I am working during the day, so it is difficult to contact me. Shipping is scheduled for Saturdays and Sundays. If you are in a hurry, please be sure to let me know in the comments. Thank you for your consideration. - Ballpoint pen refill thickness: 0.5mm, 5 refills, 4 opened refills - Ballpoint pen refill thickness: 0.38mm, 5 refills - Ballpoint pen refill model number: SXR-80-05 5P - Ballpoint pen refill model number: SXA3-500-05 - Ballpoint pen refill model number: MSXE5-1000-05 #JETSTREAM #Jetstream #Refill #ReplacementInk #BallpointPenRefill #0.38mm #0.5mm #Mitsubishi #uni #Stationery #Black