General description Manual Coffee Grinder is a mini portable hand crank grinder designed for home use. It is made of durable stainless steel, ensuring a firm and round structure with good sealing to preserve the coffee's aroma. Technical specifications Material: Stainless steel Grinding time: 2-3 minutes Usage Remove the sealing cap of the upper seat. Add coffee beans to the bean silo. Turn the handle clockwise to grind at a constant speed. Other information Ergonomically designed handle for comfortable grip. Easy to clean by rinsing with water.