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.