CRAFTER'S COMPANION-Claudine Hellmuth Rock-a-Blocks. Have you ever found your stamped impressions patchy; uneven or smudged? The Rock- a-Blocks stamp mounting system is the answer you all your problems. Its innovative patented technology allows you to achieve perfect results with every impression. The blocks are designed to work using a combination of the rocking action and depth gauge to give even pressure to the application of ink. Just adhere your clear stamp to the Rock-a-Block and your ready to go! This package contains four blocks: 6x4 inches; 6x1-1/4 inches; 4x3 inches; and 1-1/2x1 inch. Made of translucent green plastic. Stamps not included. Imported.