Shop the perfectly crafted clear acrylic blocks from Umbrella Crafts. They're thicker than other blocks on the market so your inky fingers don't touch your paper when you press down. The extra thickness also ensures that the block doesn't bow underneath the pressure and the scalloped edges are designed to make the blocks easy to grip. Umbrella Crafts acrylic stamps blocks also feature a perfectly symmetrical etched grid so you can align your stamps with precision. Use with clear stamps for the perfect position every time.