The Goldfaber Sketch Marker is a sustainable, versatile sketching tool with its dual nibs. A soft, flexible brush nib is perfect for painterly work, while a metal encased fineliner tip (approx. 0.6mm) is suitable for fine details and contours.This alcohol-based dye stuff marker is permanent once dry, pH-neutral and acid-free. The ink dries quickly and does not smudge, layer the ink for 3D effects or to achieve opacity.Colors are easy to blend and can achieve streak free color transitions.Goldfaber Sketch Markers are made of 100% recycled plastic.Details:Includes assorted colorsDual tips (brush and 0.6 mm fineliner)12 markersAlcohol-based inkWater-resistant and smudgeproof100% recycled caps and barrels