This Rollerball Pen Refill Blue 2-pack provides blue ink, 2-pack for reliable everyday writing and refill replacement. It helps extend the life of compatible pens or markers while reducing the need to replace the whole writing instrument. A dependable choice for office, school, reception, home office and commercial stationery supplies, Refills for G2, Dr. Grip Ltd, B2P, G2 Stylus, GKnock rollerball pens. Package of 2.