Derwent Inktense Pencil Set, Assorted Color, 24-Tin Pure, vibrant watersoluble ink pencils that combine the intensity of pen and ink with the versatility of line and wash Use them to create strong vivid tones then wash over with water for a translucent ink-like effect Once dry, this color wash is permanent and can be worked again using other media Conforms to ASTM D4236 Includes 24 pencils per tin in assorted colors