Mini size is perfect for storing underneath most espresso machines. The capacity is enough that you 't have to empty it too often. knock bar made of hard rubber and aluminum, fashionable and beautiful appearance, silicone bar are to reduce the noise when using, detachable design makes it easy to clean.Widely used at home, cafe shop, canteen, restaurants, and more. Affordable and product for you, it is also a good perfect gift for coffee lovers.For the professional barista as as home users of espresso machines it is essential to use a stable and solid knock box for the quick disposal of espresso grounds.size: 150 x 135mmMaterial: Aluminum alloycolour: blackPackage Contents:1 x slag boxOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.