Grind and store your herb all in one contraption with the RAW Natural Wood Grinder! The grinder section measures 65mm in diameter and is made up of two pressed wood pieces that have geometric teeth carved inside. A silicone seal around the grinder's base connects it to the glass storage jar, providing an airtight seal for optimum freshness. Each jar is molded from impact-resistant glass for durability and a plastic-free composition you'll feel good about.