Natural beech, lacquered. The Zassenhaus grinding mechanism of the coffee and espresso mills is made from robust special steel and, due to its special hardening, has an exceptionally long lifespan. With a simple turn of the knurled screw, you can continuously adjust the desired grind size. This ensures a consistent grinding result. The coffee beans are ground gently, preserving all their aroma and vital substances. Because only freshly ground coffee delivers true enjoyment.