Spectrum Noir Colouring System Alcohol Marker Pens Box SetAchieve effortless blending and colour matchingAlcohol baseds ink for perfect resultsAcid-free and non-toxicTwo nibs in one penEach pack colour co-ordinates perfectlySpectrum Noir pens are alcohol ink based markers which have been designed specifically for crafters, but these affordable markers are also great for beginners, students and hobby artists alike. Each pen is double-ended, with a broad chisel nib for large area fills and a fine bullet tip for detailed work.