Zassenhaus Barista Pro Coffee Mill, Graphite BlackFirst class material, excellent quality and precise function is what the name Zassenhaus, the leading manufacturer of manual coffee mills, has stood for since 1867. This high performance grinder is made of hardened special steel. Adjust from powder fine to coarsely crushed. The step less adjustment guarantees a consistent uniform grind with the least possible heat build up, to protect the most delicate flavours of gourmet coffee.