This stamp set, Line Art Flowers, is from Hero Arts and contains 12 pieces. These stamps are made of clear photopolymer and adhere to acrylic blocks (sold separately). These stamps can be used with your favorite inks, markers, paints, embossing powders, and other crafting mediums (all sold separately). The largest stamp measures 1.88" x 1.88" and the smallest measures 0.5" x 0.5". This set also includes sentiments such as "Sending love", "thinking of you", and more. This set is made in the USA.