Speedball Water-Soluble Block Printing Inks boast bold and vibrant colors that dry to a soft, lustrous finish. The selection of 16 shades, comprising 3 process, 5 metallics, and 6 fluorescents, includes five sizes and meet AP standards, making them ideal for block printing on surfaces such as wood, linoleum, and soft blocks onto paper. Plus, they're easy to clean up with soap and water for convenient use in any classroom setting.