This Faber-Castell Goldfaber Aqua Dual Marker 'Tuscany' Wallet features water-based dye ink that is odorless, acid-free, and pH neutral. The markers are fully water-soluble, streak-free, and do not bleed through paper. Each marker has two nibs: a flexible brush tip for artistic work and a metal-encased fineliner tip for precise lines (0.4mm). The ink is made from 100% recycled material. This set includes six colors: Terracotta, Venetian Red, Pine Green, Green Ochre, Burnt Siena, and Sky Blue Pastel. Ideal for both dry and wet techniques, these markers are suitable for professional artists and hobbyists alike. The pens and barrels are made from 100% recycled material.