Key Features:Four Standard Ink Colours:Includes black, blue, red, and green inks, allowing for versatile use in various writing tasks.1.0mm Line Width:Provides bold and clear lines suitable for everyday writing.Low-Viscosity Gel Ink:Ensures smooth and effortless writing on various surfaces.Ergonomic Design:Equipped with a rubber grip for comfortable handling during extended writing sessions.Durable Construction:Features a sturdy plastic barrel with a charcoal finish, offering both style and durability.Environmentally Friendly:The pen is xylene-free and RoHS compliant, making it a safer choice for users and the environment.