Easy to Clean TankKnock Box on the latest design of distribution pads with a deep and round curvature that allows coffee grounds directly into the knock tank. The raised back wall prevents liquid leakage. The wide opening makes it easy to use and clean, the knock tray for portafilter is dishwasher safe and the perfect companion for espresso Quiet and Non-SlipKnock Box is equipped with a removable rubber strip on the bottom, which not only has a firm support and prevents slipping when tenoning the container, the special damping knock bar absorbs more than 50% of the knocking noise and reduces the unpleasant shaking noise. Coffee Grounds Knock Box Perfect Using Experience for You Wide Range of Applications: Coffee grounds shock absorption can be used in cafes, western restaurants, bars, kitchens, canteens, restaurants, etc. Collecting a large amount of coffee grounds in your coffee grounds container is the perfect condition for your coffee brewing, and the portafilter accessories provide you with a perfect and comfortable experience when brewing coffee. [Product Size] Upper diameter 12* Lower diameter 11* Height 11.5cm Note: The data are all manually measured, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.