Pilot precise v5 rolling ball pen, non-refillable, extra fine, 0.5mm, blue ink, dozen precise v pens write through layers of copies. Concentric ring ink feeder system delivers an even, continuous flow of ink, ensuring the same density of ink from start to finish. Pen offers a large, visible ink supply for longer writing capacity. Visible ink supply. this product arrives to most customers in 2-3 business days.