This adjustable manual coffee grinder is small size: 7.9x2x2inch / 20x5x5cm, pretty portable for traveling and hiking. You can adjust the knob clockwise to make fine powder and anticlockwise for coarse powder Notes: 1. You ought to clean the coffee grinder with cleanser, then dry it out before you use it for the first time 2. Please don't use the steel wire brush and other hard tools to clean the grinder, in order to not scratch the appearance. Adjustable ceramic burr mill: Adjusting the knob, change the powder thickness from coarse to fine 30g maximum coffee bean capacity, enough for 3 people The ceramic burr will not produce any heat that helps keep the fresh and original flavour of the coffee bean Made of durable superior stainless steel, with modern appearance The ergonomic handle help you save energy and time, mill the coffee bean easily #coffee+grinder #coffee #coffee+machine #camping #outdoor #kitchen #pengisarcoffee