Conical Stainless Steel Heavy Burr Grinder This manual coffee grinder is made of durable and precise stainless steel burrs, which are built into a five axis CNC sharp blunt grinding core. It is more effective than a ceramic core burr grinder, grinding for about 45 seconds at a time. The coffee machine hopper can be filled with approximately 15-20 grams of coffee beans, and a one-time grinder can make 1-2 cups of coffee. Six levels of adjustable roughness setting This metal coffee burr grinder has six precise setting levels, so you can set specific grinding from coarse to fine. For example, here are some suitable grinding sizes: espresso machines are in grades 1-2, and mocha pots are in grades 2-3; Level 3-4, for dumping and chemical treatment; French Publishing House Level 4-5; Grade 5-6 cold brewed coffee. Portable coffee grinder, mini and easy to carry. You can easily remove the manual crank of the manual coffee grinder and add coffee beans to the hopper. Put the manual grinder in your bag for travel, hiking, outdoor travel, and backpacking. Enjoy the fun of making coffee. The manual coffee grinder burner is quieter than an electric coffee grinder. Enjoy your coffee making process without disturbing others. Enjoy coffee beans brewed using smooth and effective grinding methods.