Over 1 million happy customers since 2002
Cross 8521 rolling ball pen refill offers a blue ink that fits in all pens that use Cross refills. This blue refill is perfect for your Roller Ball pen and it is also waterproof. Cross 8521 rolling ball pen refill features a 5-mm medium point refill tip perfect for writing on nearly every type of paper and with any type of pen. The medium point ink nib has a bullet tip for easy writing. Cross 8521 refill is brand new and 100% authentic