Copic markers are the highest quality marker available anywhere. Including 4 styles that are refillable and feature replaceable marker nibs, you never have to throw a marker away. There are over 300 colors available and are guaranteed that their colors will always match. Copic Sketch Markers come in 346 colors. The replaceable Super Brush nib acts like a paintbrush in both feel and application. Sketch Markers feature refillable ink and optional nibs and are compatible with the Copic Airbrush System.