Upgrade your writing experience with our Big Fat Pen Refill 20pcs Blue Ballpoint. Enjoy smooth and fluent writing with a 1mm medium point. This pack provides you with a long-lasting supply of ink, ensuring you never run out. Compatible with the Big Fat Pen, these refills offer seamless performance. Crafted with high-quality ink, they deliver skip-free writing and vibrant blue color. Perfect for both professional and personal use. Get yours today!