Material: 304 stainless steel Color: silver ** Good quality: This manual coffee grinder is made from 304 stainless steel, this material is nontoxic, odourless, rust proof and corrosion resistant. ** Prefer grinding size: Built-in adjustable grind knob ensures you have precision control over the coarseness of your pour over, drip, cold brew, percolator, Espresso. ** Portable: There is no batteries, power or long plastic cords needed to operate, allowing you easy to carry on your next camping, hiking, backpacking, outdoors trip and so on. ** Easy to clean: Every compartment can be removed for clean, you can clean with soapy water, rinse, and dry well. ** Long handle: A long stainless steel handle for easy grip, it is ergonomic and comfortable to grip, effectively save your labor and time when is in use. ** Widely use: Can be used to grind coffee beads or others.