- Dispose of your used coffee grounds quickly and easily within inches of your espresso maker. Just tap your portafilter against the knock bar and directly into the knock box to empty out the used grounds. No mess, no fuss.- The knock box is built from sturdy ABS plastic with a solid steel core knock bar and covered in a durable rubber sleeve that absorbs blows. It’s quiet to use, near impossible to break. Rubberized knock bar won’t dent or scratch your portafilter and helps eliminate spills, it keeps The Portafilter Safe.- Rubber bar can be removed from its plastic holder for emptying and cleaning. The bar comes out easily for fast cleaning.- Deep bay design makes coffee grinds not easy to splash while oblique mouth allows you to use more convenient. Anti-slip design at the bottom, more stable when knocking.- This coffee grounds knock box is 4.8-inch compact size to hold a decent amount (8-10 pucks) of coffee pucks and the size is perfect for storing on most espresso machines' drip tray. Why Use A Knock Box? A knock box is an espresso accessory that goes quite simple on the eye, but choosing the right one can boost your brewing experience manifolds. 1.It Keeps The Portafilter Safe: When you try to expel the puck from the portafilter into your trash can, you would have to bang it against the palm of your hand or the side of your garbage bin to make sure all of it comes out. Doing so, there’s always a risk of damaging your portafilter and the trash can. If you use a dedicated knock box, it will effortlessly collect all the waste and keep your portafilter unharmed. 2.To Avoid Odor Buildup: Wasted coffee grounds emanate an unpleasant smell. If you throw them in your trash can, the smell will disperse all over your place. Even when you clear out the trash, the odor might persist. A knock box traps the bad smell while storing old coffee grounds. 3.You Can Store Old Coffee Grounds For Gardening: Old coffee grounds can be a rich fertilizer option for your garden beds. Knock boxes give you ample storage space for holding the residual coffee grounds so that you can later transfer them to a compost bin. Track Page Views WithAuctiva's Counter