Product Details: Mitsubishi Pencil Jetstream Refill SXR-80-05 (Blue, 0.5mm) This is a set of 10 brand new, unopened refills. Condition: All items have been stored at home in their individual packaging. There is no ink degradation or damage, and the condition is excellent. Please check the photos. Model Number: SXR-80-05 Ink Color: Blue Ball Diameter: 0.5mm Compatible Pens: SXE3-601-05 / MSXE3-701-05, and other Jetstream multi-color ballpoint pens. Shipping: The refills will be protected with cardboard, waterproofed, and shipped in an envelope via anonymous delivery (Rakuraku Mercari or Yu-Yu Mercari). Other: If you have any requests, I am open to price adjustments, so please feel free to comment. Please refrain from purchasing if you are concerned, as these are items stored at home.