ESAY TO CLEAN - Do not use water to wash. It’s recommended to use the complimentary brush to clean the manual coffee grinder. If you have any questions or are not satisfied with the product, please feel free to contact us by sending us a message via Amazon. DURABLE & BUILT TO LAST - Our C3S manual coffee grinder is upgraded to an all-metal aluminum alloy body, with no plastic part inside, built for precise grinding and longer lasting. Fixed with a dual-bearing design, making the grinding process more detailed and the coffee powder more uniform. PATENT S2C STEEL BURR - The hand coffee grinder uses a patented S2C steel burr, ensuring a consistent and uniform grind every time. This coffee grinder effectively grinds the coffee beans into consistently sized particles, allowing for an even extraction that enhances the flavor and aroma of your coffee. ADJUSTBALE GRIND SETTING - With stepless grinding adjustment, our manual coffee grinder allows you to easily achieve the perfect coarseness for your preferred brewing method. Whether you're making French Press, Pour Over Coffee, or Espresso, TIMEMORE has you covered. COMPACT BUT PRACTICAL - A prefect size 52mm and weight in just around a pound (530 g) to be easy to hold and carry, but still has a decent capacity of 25 grams, enough for preparing a cup or two in daily use. Chestnut Manual Coffee Grinder C3S Black