Upgrade your writing game with this pack of two medium blue ink refills for Pentel R.S.V.P. ballpoint pens. Made with environmentally-friendly polymer resin, these refills help reduce your carbon footprint without compromising on quality. They are easy to install and ensure smooth and consistent writing for all your needs. Perfect for collectors and writing enthusiasts, these refill packs are a must-have for anyone who wants to keep their Pentel R.S.V.P. pens in top-notch condition. With this pack, you'll never have to worry about running out of ink in the middle of an important note-taking session or writing task. Get your hands on this lot of two refill packs today and take your writing to the next level!