Milk Frother, SUNKO Electric Handheld Latte Cappuccino Coffee Maker with 2 AA DURACELL Batteries The Tastmate coffee bean grinder is made of 304 stainless steel, which is meet the ASTM standards in the United States. And there is adjustable design inside, you can rest assured of use and get the grinding effect you want.Pure hand cast! Give you a better grinding time!