Expert, versatile and boasting an unrivaled colour spectrum, the Winsor & Newton Promarker is a must-have professional quality addition to your marker collection. Promarkers contain malleable alcohol-based translucent ink, which can be blended into endless tones by using together or with the Blender pen. Each pen is twin-tipped, with a broad chisel nib and fine bullet nib. These high quality nibs provide consistent, streak-free coverage. Use on paper, bristol board and other surfaces intended for use with ink. You can also experiment by using on on ink-resistant surfaces like acetate, glass, plastic and wood. Explore the extensive Promarker colour spectrum with this 96 piece colour kit. This set is contained in a practical box that opens front facing for easy colour access.