Coffee Knock Box Rubber,Non- Slip Coffee Grounds Container, Espresso Coffee Knock Box,Container Grind Knock Out Box Superior Material: The espresso coffee knock box is composed of ABS material. environmentally friendly and durable. Non-Slip Design: Coffee ground knock box' bottom is designed with silicone, non-slip, more stable when use it. New design coffee knock container can be stored on the espresso machine's drip tray. Detachable knocking Bar: The intermediate rod is made up of metal cylinder wrapped by ABS material. Removable and easy to clean. Wash in the Dishwasher: Coffee grounds bin can be used in the dishwasher. Save your time on the washing the coffee tool. Application of Coffee Ground: The coffee grounds collected are used to deodorize, make facial mask, make chemical fertilizer, etc. Also a great gifts for men and women.