ceramic Grinding Core: The Manual Coffee Grinder Don't Generate Heat And Other Piculiar During The Grinding Process, Which Do Not Affect The Original Flavor Of Coffee Beans.adjustable Size: The Thickness Of Coffee Powder Can Be Adjusted By Adjusting The Nut. The Thinner The Clockwise Direction, The Thicker The Counterclockwise Direction.removable Design: The Whole Is Detachable, Which Is Easy To Remove The Dirt And Keep Clean.visual Capacity: The Unique Visual Capacity Design Can Help You Control The Amount Of Coffee Beans Without Causing Waste.washable: The Body Can Be Completely Disassembled And Washed In Water. After Drying, It Is Installed And Ready To Grind Your Favored Coffee Powder.manual Design: No Batteries, Power, Or Long Plastic Cords Needed To Operate Your Portable Compact Coffee Grinder, Allowing You To Travel With And Brew Freshly Roasted Ground Coffee Beans On Your Next Camping, Hiking, Backpacking, Or Outdoors Trip.