Blue Ink Pad $5.00 Default Title - $5.00 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. Our permanent waterproof ink can be used to print on nearly every surface! Stamp colors in brilliant hues on paper, fabric, clay, wood, and more! Each case 3 7/8" x 2.75" (10 cm x 7 cm) is printed with corresponding ink color. Conforms to ASTM standards.