These thumb-sized ink pads feature pigment based ink that works well on a variety of surfaces including paper, fabric, unfinished wood, terracotta - unglazed pottery, and leather. To use, insert your index finger into the hollow of the ink pad, and gently dab the ink onto a stamp or stencil. Their small size makes it easier to apply ink precisely to the stamps and to combine multiple colors onto the stamp, creating a beautiful multi-colored stamping impression.