Espresso machine accessories: The espresso knock box for espresso machines is perfect for collecting used coffee grounds. You no longer have to go through the kitchen to dispose of coffee grounds, which is very convenient. These grounds can be transferred to garden soil and used as fertilizer for plants.Perfect Size: The diameter of the espresso grounds knock box is 10 cm (3.9 inches), preventing coffee grounds from splashing while holding a sufficient amount. This reduces the need for frequent cleaning and fits well in compact spaces such as home or office coffee stations.Easy to Clean: The sloped top surface allows for easy waste disposal. The knocking rod is removable, and the smooth inner surface enables quick rinsing with water. The knock box is also dishwasher safe, simplifying cleanup. Using a garbage bag liner eliminates the need for washing.Sturdy and Durable: Made from high-quality ABS, the knock box features a durable rubber-coated rod with a solid steel core. Precision-cut notches securely hold the rubber strip in place. Smooth edges help prevent scratches on hands or equipment.Noise Reduction and Anti-Slip: The rubber-coated rod helps absorb impact noise, reducing disturbance. Rubber pads on the bottom prevent slipping on wet surfaces and protect countertops from marks or damage.