This is a Staedtler Lumocolor F fine-point oil-based pen. From Staedtler, a popular German stationery brand, comes the versatile Lumocolor oil-based pen. It's highly regarded for its excellent adhesion and lightfastness, which are the most important qualities for an oil-based pen. It comes in a dedicated case that can also be used as a stand-up box, making it convenient. This is a new, unused item.