Built-in Coffee Knock Box: The watchget Espresso Knock Box features an embedded flat mouth design, allowing baristas to efficiently dispose of coffee grounds into a trash can under the table. This design saves space and improves workflow. Premium Material: Crafted with high-quality stainless steel and durable silicone, this knock box is built to last. The silicone edge gasket reduces friction with the table, protects surfaces from abrasion, and minimizes noise during use. Detachable Rubber Rod: The knock bar is made of robust stainless steel and wrapped in durable rubber, providing excellent cushioning. It ensures your portafilter is protected from dents and scratches, even with repeated use. Versatile Applications: Ideal for use in cafes, home kitchens, offices, and various other settings. This knock box not only handles coffee grounds efficiently but also serves as a reliable tool for managing food waste. Easy to Clean: Simply rinse the knock box with water and dry with a rag. The detachable rubber rod makes cleaning quick and hassle-free, requiring no additional maintenance. Our bottomless knock box has bottom dimensions of 15cm (5.39 inches) × 13.7cm (5.9 inches) and top dimensions of 18cm (7.09 inches) × 16.7cm (6.57 inches); please ensure your desktop opening fits within this size range. Built-in Coffee Knock Box: The watchget Espresso Knock Box features an embedded flat mouth design, allowing baristas to efficiently dispose of coffee grounds into a trash can under the table. This design saves space and improves workflow. Premium Material: Crafted with high-quality stainless steel and durable silicone, this knock box is built to last. The silicone edge gasket reduces friction with the table, protects surfaces from abrasion, and minimizes noise during use. Detachable Rubber Rod: The knock bar is made of robust stainless steel and wrapped in durable rubber, providing excellent cushioning. It ensures your portafilter is protected from dents and scratches, even with repeated use. Versatile Applications: Ideal for use in cafes, home kitchens, offices, and various other settings. This knock box not only handles coffee grounds efficiently but also serves as a reliable tool for managing food waste. Easy to Clean: Simply rinse the knock box with water and dry with a rag. The detachable rubber rod makes cleaning quick and hassle-free, requiring no additional maintenance.