Double tip markers set Gold & Silver Zig Kuretake The Zig Kuretake Silver & Dorado is the perfect choice for calligraphy and illustration enthusiasts. This set includes three different types of dual-tip markers, each with a gold tip and a silver tip: one with round tips, 1 to 2 mm thick, ideal for writing and illustrating; another with flat tips, 1.5 to 5 mm thick, designed for calligraphy; and another with a brush tip suitable for all the techniques mentioned above. Acid-free, these water-based pigment markers offer archival quality. Brand: Kuretake.