Speedball - Water Soluble Block Printing Ink - 37cc - Copper - Speedball pioneered the movement to nontoxic printmaking with its innovative and unique water based printmaking inks 35 years ago. They continue the tradition of providing products that are safe for the enviroment and the people who use them today. Also known as "relief ink", Speedball Water Soluble Block Printing Ink dries to a rich satiny finish. Use these water-soluble inks in the studio, school or home; clean up is a breeze! Non-toxic, gluten free. Great for printmaking with a variety of surfaces. Available in 13 colors and 5 metallics.