Adjustable Ceramic Burrs: By adjusting the inner knob, it is easy and convenient to achieve a consistent fine or coarse grind for dripping, cold brew, cafetiere / French press and so on Durable Stainless Steel: The ceramic burrs which give a robust grind and a stainless steel construction, this manual coffee grinder will last for a long time Environment friendly: No batteries, power, or long plastic cords needed to operate your portable compact coffee grinder Noiselessness: Convenient removable hand crank mechanism consistently eliminates over 90% of the noise that electric grinders produce Easy to clean: Easy to dismantle and easy to clean