Copic Classic Markers are top-quality illustrating tools used for decades by professionals around the world. They are the marker of choice for architectural design, product rendering, and other forms of industrial design, they are also popular for use with models, ceramics, and similar projects. Ideal for all calligraphy and airbrushing, too. 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.