Espresso machine accessories: The espresso knock box for espresso machines is ideal for collecting used coffee grounds. No longer do you have to walk across the kitchen to dispose of coffee grounds in the trash, making this knock box a very convenient solution. Additionally, the coffee grounds can be transferred to garden soil to serve as a natural fertilizer for plants.Perfect Size: The diameter of the espresso grounds knock box is 10 cm / 3.9 inches, designed to prevent coffee grounds from splashing while offering sufficient capacity. This means less frequent cleaning and makes it ideal for compact spaces such as home or office coffee stations.Easy to Clean: The sloped top surface of the espresso knock box allows for easy disposal of waste. The knocking rod is removable, and the inner surface is smooth for simple cleaning. Simply rinse with water, or place the coffee knock box in the dishwasher for hassle-free maintenance. Using a garbage bag inside the box eliminates the need for regular cleaning.Sturdy and Durable: This espresso accessory is made from high-quality ABS material. The knock rod features a durable rubber coating with a solid steel core. Precision-cut notches on the side securely hold the rubber strip in place. The coffee knock box also features smooth edges to prevent hand or wrist scratches.Noise Reduction and Anti-Slip: The rubber-coated rod reduces noise when striking, helping to minimize disturbance. The rubber pads on the bottom of the box provide anti-slip performance on wet surfaces, protecting countertops from scratches or damage.