The bottom and upper part of this grinder are made of plexiglass, allowing you to look at your herb as it is being grinded into fine particles.
Small

    * Diameter: 5.5 cm
    * Height: 2.8 cm
    * Weight: 50 grams

Medium

    * Diameter: 6 cm
    * Height: 3 cm
    * Weight: 66 grams