PILOT FRIXION BALL Refill 0.4mm Blue, Set of 3 x 10 packs - Brand: PILOT - Model Name: FRIXION BALL - Color: Blue - Thickness: 0.4mm - Quantity: Set of 3 x 10 packs The box was opened to check the contents, but the refills are unused. Purchased from an authorized retailer and stored in a cool, dark place.