PRIMA FLOWERS-Prima Press Stamp Holder Block. This innovative stamp system allows you to easily stamp custom words and sentiments that are perfectly aligned! Designed for use with the Prima Press Alphabet Stamp Sets (not included), this base block has special slots on one edge that hold up to twelve individual stamps. It is made of plastic and measures 5x1-3/4x1/2 inch. Each package contains one Stamp Holder Block. All stamps sold separately. Imported.