*This set of markers is a paragon of functionality and quality, tailored for a diverse range of users, from students and artists to office professionals. *Three Colors Available, Classic Red - Black - Blue Scheme not only exudes a classic aesthetic but also caters to various practical needs.*The oil - based ink is a testament to advanced formulation. It strikes the perfect balance between fluidity and viscosity, allowing for a consistently smooth writing experience without any interruptions. its exceptional resistance to water, sunlight, and fading makes it suitable for both indoor and outdoor applications. *The dual - tip design. The 0.5mm ultra - fine nib offers unparalleled for intricate tasks such as calligraphy, fine - line drawing, and detailed illustrations. Meanwhile, the 1.0mm fine nib is good for covering larger areas, making it a breeze to color in drawings or highlight extensive text passages.*Adding to its user - friendly design is the pen clip. It provides a convenient way to keep your markers within reach, securely attached to your stationery. When capped, the markers are protected against ink drying, and their stable design ensures they stay put on your desk, eliminating the hassle of constantly retrieving a fallen pen.