Goldfaber Aqua Dual Markers offer versatility with their dual nibs. This modern creative tool has a soft, flexible brush nib for artistic work and a 0.4mm metal encased fineliner tip for details and contours. The dye-based ink is fully water soluble and available in 60 vibrant colors. The markers are odorless, acid-free and pH neutral. Create with confidence knowing the ink won't bleed through most papers They are an ideal tool for both dry and wet techniques. Goldfaber Markers are an ecologically responsible product, each pen barrel and cap is made from post-consumer recycled plastic.