stainless steel:This externally adjustable hand grinder focuses on the grinder itself. It uses a metal body, CNC grinding core, and double bearing configuration to create a -level professional coffee grinder.And the dual bearing center positioning - grinding coffee powder particles evenly, so you can quickly grind a coffee powder that meets the taste. Grinding degree adjustment function: built-in grinding degree adjustment knob, simply turn the grinding knob to adjust the manual coffee grinder to obtain the desired coffee taste . You can enjoy a wonderful coffee time , in the office, or during outdoor camping and hiking, such as POUR OVER COFFEE, MOKA POT COFFEE, FRENCH COFFEE, etc. Easy to disassemble and clean: The compact design makes it easy to disassemble without the need for any tools. Do not rinse with water. In general, it is not recommended to disassemble and replace parts of the bean grinder. This helps improve the accuracy of grinding. Colour:Black Material:Stainless steel Package Contents: 1 x Coffee grinding device Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.