With tri-nibbed tips that allow for thin, medium and thick lines, these permanent markers are ideal for drawing everything from fine lines to filling, making them ideal for any designer. This set features 25 markers in a wide array of colors and a plastic case to keep them organized and easily accessible. Set of 25. Permanent color AD Marker with three distinct line weights in one nib. Brilliant, sparkling color delivered in fine point, medium weight or broad strokes with just a twist of the wrist.