The Roma 391A business card holder with 4 compartments (internal dimensions 57x90 mm) is a plastic refill designed to integrate with ring binders and contact organizers. Made of highly durable, anti-reflective transparent polypropylene, it holds up to 8 cards (front and back), protecting them from dust and fingerprints. It is a versatile solution for professionals who are constantly networking and need to expand their contact database.