Create a stylish home espresso coffee bar with the Juan commercial espresso knock box. The Juan knock box makes knocking packed espresso grounds from portafilters a simple step in the process of making coffee. Quality is evident with 18/10 stainless steel, a removable rubber-coated bar, and heavy, non-slip rubber base. The box is dishwasher safe. Using a knock box to remove used coffee grinds from a portafilter is an important barista technique since it helps reduce the loss of heat in the handle compared to rinsing in a sink. Perfect for home or light commercial use.