the big barista commercial Knock tube with brown barista cloth. big baristas knock tube is ideal for busy establishments. Standing at waist height, 86cm, for easy knocking out and less barista arm fatigue. It is both sturdy and has a high capacity to hold a lot of used grinds. Easy to clean and easy to empty. Includes microfiber cloth cleaning the portafilter for each use, attached to the top, with a clip. Rubber base prevents slipping when knocking out the portafilter, Made of tough polypropylene and a solid nylon knock bar!