These Acrylic Novelty Transparent Dice 30 mm (1.25 inches) (1/Pkg.) are made of transparent cast acrylic and are of the very highest quality. They feature rounded corners and are available in a variety of colors and sizes (30mm, 50mm and 70mm). Excellent for magicians that use dice size switching. The larger sizes make great looking bookends. All of these dice are sold individually.