Features: This product use food grade aluminum alloy, has long service life. This product is durable, not easy to stick powder, reduce the waste of coffee powder. Has anti-drop-magnetic design, reduce the coffee pow-der splash out, won\'t stain your machine or the floor. There are three colors to optional and three size, you can choose the one you want. Without this product, the dosing r-ing is dirty and it is easy to dust, after use this product, the dosing r-ing become clean.