The Pilot RFJS-GP-M Green Medium Refill is a genuine Pilot ballpoint pen refill designed for compatible Pilot retractable ballpoint pens. Filled with vibrant green oil-based ink, it delivers smooth, consistent writing and clean, reliable lines with a medium point. Ideal for note-taking, colour-coding, journaling, document marking, and everyday writing, this genuine Pilot refill restores your pen's original writing performance while extending its lifespan.