These acrylic blocks are designed wit comfort in mind, featuring an 8mm wall to provide a handy grip. The lightly printed .5" grid allows for easy placement and precision when stamping unmounted clear stamps. The thicker printed lines located in the center provide a guide for precise centering. This package contains 2 blocks in 2 different sizes. These blocks work well with both small sentiments and greetings as well as your favorite image stamps. The small acrylic block measures 2" x 4.5" and the medium acrylic block measures 3.5" x 4.5".