This is a set of four ballpoint pens, seemingly promotional items from pharmaceutical companies: three multi-color pens and one black single-color retractable pen. TRAZENTA: Trajenta is a diabetes medication. It's a tablet from Boehringer Ingelheim Japan. JANUVIA: Black, red, and blue. Januvia is a diabetes medication. BANYU: Black and red. BANYU was a company called Banyu Pharmaceutical (now defunct due to a merger). OLMETEC: Black, blue, and red. Olmetec is a medication for high blood pressure. All three multi-color pens currently write in all colors, but the remaining ink levels are unknown, and I cannot guarantee future color output. Please understand this. It seems that pharmaceutical companies no longer manufacture and provide promotional items like ballpoint pens, which was a common practice in the past, so these may have some rarity. Especially Banyu Pharmaceutical, which disappeared quite some time ago. This is a set for sale. Please refrain from individual sales. Thank you for your understanding. Thank you for viewing. Type... Multi-color ballpoint pen Ink... Oil-based Body Material... Plastic Other Features... Bundle sale