Espresso machine accessories: The espresso knock box for espresso machines is perfect for collecting used coffee grounds. You no longer have to go all the way through the kitchen to dump the coffee grounds into the trash can, which is very convenient. In addition, they can be transferred to your garden soil and become a great fertilizer for plants. Perfect Size: The diameter of the espresso grounds knock box is 10 cm/3.9 inches, which prevents coffee grounds from splashing everywhere, and can also hold enough coffee grounds, so you don't have to clean it often. The compact size is ideal for limited counter space, such as coffee corners in homes and offices. Easy to Clean: The sloping top surface of the coffee knock box is convenient for dumping waste, the knocking rod can be easily removed, and the inner surface is smooth. Just rinse the espresso tools with clean water. The coffee knock box is also dishwasher safe, saving time on cleaning. Alternatively, you can use a garbage bag liner for no mess cleanup. Sturdy and Durable: The espresso accessory knock box is made of high-quality ABS, and the knock rod is made of durable flexible rubber with a solid steel core. The precisely designed notches on the side hold the rubber strip securely in place. The coffee knock box features smooth edges to help prevent scratches on hands or surfaces. Noise Reduction and Anti-Slip: The rubber-coated rod helps absorb impact and reduce noise, protecting you and your household from loud knocking sounds. The rubber pads on the bottom prevent slipping on wet surfaces and help protect countertops from marks or dents.