From the manufacturer:
This acrylic stamping block is made for use with clear stamps. Block is 4x5 inches. Features: built in ruler, laser polished rounded corners and beveled edges. A great advantage to using see-through crystal-clear acrylic stamping blocks for unmounted stamps is that you can see exactly where you are placing the stamped image on your work! Made in USA.
This acrylic stamping block is made for use with clear stamps. Size: 2.5" round with curvy edges and 0.5" thick laser polished rounded corners. The great advantage in using see-through, crystal-clear acrylic stamping blocks for unmounted stamps is that you can see exactly where you are placing the stamped image on your work! Made in USA.