Parker Quinkflow Ball Pen Refill Medium Nib, Red Ink refill designed for PARKER ballpoint pens PARKER QUINKflow ink offers consistently smooth writing on paper Beautifully pigmented ink captures your thoughts in color All PARKER ballpoint refills are certified ISO 12757.2 and comply with Documentary Use standards for the handling and storage of documents during long periods of time. Includes 1 Red ink refill. Medium tip for everyday writing