This is a 0.5mm ZEBRA SARASA ballpoint pen refill featuring a Peko-chan design. It's a limited edition and is no longer sold, so I believe it's rare. I purchased it for my collection, so it's unopened, but please understand that it has been stored at home. (No pets, no smokers, stored in a dark place) - Brand: ZEBRA - Model: Sarasa Clip Peko-chan - Colors: Black, Red - Pen Tip Size: 0.5mm - Quantity: 2 black refills, 3 red refills - Limited Edition Thank you for looking.