Copic Original Toner Gray colored art marker set. The original line of high-quality illustrating tools used for decades by professionals around the world. Preferred for architectural design, product rendering, and other forms of industrial design, they are also popular for use with models, ceramics, and similar projects. Copic markers are ideal for all calligraphy, airbrushing, and graphic arts needs. The broad nib offers smooth, consistent coverage for larger areas, while the fine nib allows for easy detail work. Photocopy-safe and guaranteed color consistency. Compatible with the Copic Airbrush System. Markers are refillable and have a variety of nib options. Color choice is expandable to include the entire selection by purchasing Various Ink refills and empty markers. Includes plastic storage case. Set of 12 Toner Gray colors as shown. Copic CTG12 Original colored art markers.