About This [Generous Capacity & Space-Saving Design]: This large espresso knock box (5.9x6.3 inches) features a wide opening structure that holds up to 15 coffee pucks—spacious enough to stash used grounds and tamped pucks without frequent emptying! Sleek and highly practical, it fits perfectly in coffee shops, offices, home kitchens or coffee bars, keeping your countertop neat and elegant. [High Quality Knock Box Espresso]: This large Knock Box is made of high - quality ABS material and is well made and sturdy with very thick material. The knock bar is made of durable and flexible rubber and contains a strong steel core that reduces noise and protects your portafilter when the portafilter is struck. Precisely carved notches on the sides hold the rubber bar securely in place. [Anti - slip and Shock - Absorbing]: Our large Espresso Knock Box has a round non - skid silicone gasket base with an anti - slip and shock - absorbing design, which ensures stability when knocking the puck and prevents damage to your countertop during use. [Easy to Clean]: The rubber knock bar of the Espresso Puck Knock Box is detachable, so you can easily take it apart, empty the Espresso Knock Boxes, and then clean it with hot water or directly put it in the dishwasher. [Perfect Size & Fast Processing ]: This Coffee Grounds Knock Box is ideal for storing under most espresso machines, making it perfect for making coffee in coffee shops and offices. The IAOSEN Espresso Grounds Knock Box is a must - have espresso accessory for anyone who enjoys brewing espresso at home. Whether you're a seasoned barista or just starting out, this coffee grounds container is sure to enhance your coffee brewing experience.