Introducing the Knock Box™ 20 from Breville that can conveniently store up to 20 espresso pucks, for quick and easy disposal. Strike the portafilter against the knock bar for quick, easy and mess-free disposal of the coffee puck. The durable knock bar also is removable for easy cleaning of the inner vessel. The base features anti-slip rubber grip for increased stability on the benchtop. The perfect match for your espresso machine.