Copic Sketch markers are alcohol-based, refillable dye markers with replaceable nibs for full versatility. Each marker has a flexible brush nib for blending and creating variable-width strokes, as well as a firm chisel nib for writing and sketching in broad strokes. Great for comic drawing, scrapbooking, fine art, illustration, product design, architecture, and more, this marker is an essential for artists, designers and crafters. Details:Available in multiple colorsDual nibs (brush and chisel)Ethanol-based inkPermanentRefillableNontoxic