Vivid, dense writing is clearly visible from longer distances in larger rooms. Durable Twin Pipe Feed System™ provides consistent color intensity and ink flow. Ink markings wipe away clean from boards with no ghosting or shadows. Refill Format: Standard Marker Cartridge; Refill For Series: Pilot™ BeGreen™ V Board Master Dry Erase Markers; Refill Ink Color: Black; Color Family: Black.