Coffee knock box made of abs plastic material, durable and sturdy, easy to carry and use coffee bucket. Anti-slip design at the bottom, more stable when knocking slag. Dispose of your used coffee grounds quickly and easily within inches of your espresso maker. You can store old coffee grounds for gardening, can provide irrigation and decoration for your garden. This knock box can be used at home. and the huge capacity is perfect for the commercial espresso machine, so it can be widely used on cafe shop, canteen, restaurants, bars and more. The rubber design has a very good buffering performance,can reduce the noise and protect the handle of coffee machine,and the removable design make it easy to clean. Easy to clean, the knock-box and knock-bar are dishwasher safe, save your time on the washing the coffee tool