AMERICAN CRAFTS-Stamp Collection: Acrylic Block. It's easy to get all your card making; scrapbook; and craft projects looking shipshape with this nifty acrylic block. Simply place clear stamps on the block using the grid and rulers to ensure a straight and accurate layout every time. Apply ink to the stamp; position the image onto the desired surface; and press down firmly. Voila! Every project looks amazing! Each block measures 4x7-1/2x3/4 inches overall; the surface gird lines are in 1/2 inch increments both horizontally and vertically; and the two edge rulers each have 1/4 inch increments. This package contains one acrylic stamp block. Imported.