Pilot g2 gel ink refill, extra fine, blue ink, 2/pack refills are designed for use with pilot g2, g2 limited, g2 pro, g6, b2p, dr. Grip ltd, dr. Grip gel, g-knock begreen, precise gel begreen, execugel and q7. Gel ink formula delivers smear-proof, smooth writing. Smear proof. larger quantity quotes available. Please call 1-888-978-7759. this product arrives to most customers in 2-3 business days.