Zebra Sarasa RDI LV-Refill, Medium Point, 0.7mm, Black Ink, 2-Count (87012) 0.7mm medium point, low viscosity black gel ink for quicker writing speeds and improved comfort Rapid Dry Ink Technology eliminates smudging and smearing Bold, highly pigmented color perfect for everyday writing and creative expression Vigorous quality assurance testing guarantees durable performance for all Zebra products Designed to complement Zebra's Sarasa 0.7mm gel pen