The Pilot RFJS-GP-M Red Medium Refill is a genuine Pilot replacement refill designed for compatible Pilot retractable ballpoint pens. Filled with vibrant red oil-based ink, it provides smooth, consistent writing with a medium point for clear, bold lines. Ideal for editing, proofreading, marking, note-taking, journaling, and everyday writing, this genuine Pilot refill restores your pen's original performance while extending its lifespan.