About This Large Capacity: The 8.46x8.85x33.66 inches size of this knock box gives it a large capacity, which makes it suitable for cafes, restaurants, and tea shops in a high-traffic area Thoughtful Design: The rubber knocking bar can reduce noise and vibration when knocking coffee grounds while protecting the coffee machine handle. The deep bowl design can keep coffee grounds from splashing all around 3-part Structure: This coffee knock box can be detached into 3 parts: lid, body, and bottom. The detachable lid not only fixes the bag to keep it from slipping to the bottom but also allows for convenient replacement of the garbage bag Built to Last: With the good properties of high temperature, wear resistance, the engineering plastic processed by stretch molding makes this espresso knock box not easy to crack Easy to Clean: With its smooth inside wall and detachable structure, you can easily clean the coffee grounds knock box with running water and a towel