Koi brush markers are range of water-based dye-stuff brush markers that are ideal for illustrations, designs and sketches. They are suitable for use by students, Graphic Artists, Designers, Illustrators, Architects and Cartoonists. The Koi range contains 48 brilliant colours plus a separate blender (transparent ink) that blend easily to create a multitude of colour hues. The blender allows you to create seamless washes and colour gradations. The Koi brush markers feature a flexible plastic nib and a ventilated cap for safety.