Product information: Product name: hand grinder Function: Coffee grinder Material: pine technology & cast iron & ceramic Product size: 10*10*17cm Specification: 2-3 servings Note: Coffee beans contain oil, so the grinder should be cleaned after grinding. Otherwise, fat will accumulate and will smell for a long time. Even high-quality beans are ground into strange powders. The grinder should be cleaned after each use. Packing list: Coffee grinder*1