Fino's Mess-Free Espresso Knock Box quickly empties portafilters for faster reload and brew times. Its unique design without a center rod allows ample open space to knock and empty spent espresso pucks faster with less mess compared to traditional knock boxes that do have center rods. The wider opening, no center rod, and lower rubberized knock-pad allows the entire espresso puck to land inside the bin and not on the counter. Its high surrounding walls keep grounds from escaping and avoid messy splashes. It's perfectly sized (4.7 x 4.7 x 4.5-inches) to fit most espresso machines drip trays and ideal for at-home baristas and professional espresso or coffee bars.