Product description For Home, Office & Travelling The Manual Coffee Bean Grinder is the perfect tool to add to your coffeecollection. The grinder features an adjustable mechanism that can easily be adjusted byraising or lowering the locking nut, this will affect the coarseness of the grind which isnecessary depending on your brewing technique. A coarse grind is ideal for cafetieresa medium grind is great for flat filter drip coffee makers, and a fine grind is perfect forcone shaped drip coffee makers. Could adjust the degree of thickness. Sleek, slim design makes it easy for storage in a compact space. washable, cleaned by brush. Beautiful and healthy ceramic mill. Operation: 1.3 spoons/person, add 2-3 person, do not add extra more for protecting the ceramiccore grinder, Step by step. 2.Turn the grinder in the clockwise direction by right hand. 3.Knock the grinder sometime for better operation. Package Contents: 1 Manual Mini Coffee Grinder 2 Double Cup SPETLEK Manual Coffee Grinder with Ceramic Burrs Adjustable in Black