Press and blow, so that there is not any coffee powder left within the grinder, which is clean and hygienic The model with the inner diameter of the bean bin interface of the grinder between 52-77mm can be used universally Silicone pressing tube and aluminum alloy bonding base Colour: Black Material: Aluminum Alloy + Silicone Package Contents: 1 x Air blowing chamber 1 x base Only the above equipment content, other products aren't included. Note: Light reflection and assorted displays can cause the colour of the article within the photograph a little different from the real thing. The measurement allowed error is +/- 1-3cm.