This package contains one 2.5 inches (6cm x 6cm) waterproof premium quality ink pad. Very quick-drying both on coated and uncoated paper, longer time to dry on acetate Vivid, opaque pigment colour, water-based and acid-free The ink guarantees crisp lines when used with water-based markers, inks or paints Watercolor with confidence, the ink is made to last Lid with safety lock to keep the ink from drying Stackable both packed and unpacked, to get maximum functionality of use and storage Made in China by Ciao Bella, conforms to ASTM D 4236.