The Rotring Trio PEN is a premium, multifunctional writing instrument that combines two ballpoint pen tips and a mechanical pencil in one sleek, metal body. Known for its durability and precision, it features a hexagonal barrel to prevent rolling and ensure a comfortable grip. A twist mechanism allows easy switching between the pen and pencil functions, and it includes a replaceable eraser under the push-button cap. While it is heavier and pricier than standard pens, its professional look and high-quality construction make it ideal for frequent use in professional settings.