Commercial Quality Great for Restaurant or Home Espresso Knock Box stainless steel- used to knock those spent espresso grounds out of the port filter basket with ease, speed, and no mess. A must have accessory for espresso machines. Create that ideal cup of coffee everyone so craves these days. To do so own our well functioning Knock Box Set! It includes: (1) Knock Box (KB-166). Its rugged stainless steel design with removable metal reinforced knock bars enable advanced usage! Ideal for espresso related filtering applications and puck cleaning advantages! Dimensions - L X W X H: 7 x 6-1/2 x 4 in. (18 x 16.5 x 15.2 cm). It features a 6 depth. This set also en-holds: (1) Knock Bar (KB-BAR) to cause convenience throughout every coffee brewing creation. After an effective cup of caffeine has been produced the knock box is full of excess espresso grounds. To detach its undesirable presence use this rubber knock bar to knock the heated knock box to discard of the unwanted puck.