The Twin Marker Set offers a palette of 80 colors that are alcohol-based. These markers and felt pens allow for smooth and intense color transitions. They are equipped with a fine tip of 1 mm for precise details and a broad tip of 2-6 mm for larger areas. The line thickness can be adjusted by the pressure applied to the paper, making them suitable for various applications. The markers feature alcohol-based ink that ensures even color distribution. Even when layering different colors, the inks do not bleed. The set comes with a storage box that keeps everything organized and tidy. These pens are ideal for drawings, mangas, sketches, scrapbooking, graphic design, interior design, and the fashion industry.