Speedball Fabric and Paper Block Printing Ink. This unique oil-based ink is excellent on paper, cotton and polyester blend fabrics. It cleans up easily with soap and water when wet and dries to a permanent state that can be machine laundered once cured. Ink will dry to the touch overnight. Printed fabrics can be laundered after one week at room temperature. Use cool water and mild soap when laundering. Each package contains six 1.25 fl.oz. (37ml) tubes of block printing ink - red, blue, yellow, green, black and white. Conforms to ASTM D4236. Made in USA.