Coffee Knock Box 6 inch by Apexstone offers a durable rubber knock box with a removable knock bar and non-slip base for espresso prep at home or in cafes. Multipurpose use covers coffee shops, western restaurants, bars and home kitchens. Package included: 1X Coffee Knock Box. Easy to clean by hand or dishwasher safe. Features: Durable rubber construction protects hands and portafilters from scratches. Coffee Knock Box 6 inch size fits most espresso machines and helps prevent coffee grounds splashing. Multipurpose use for coffee shops, western restaurants, bars and home kitchens. Easy to clean by hand or dishwasher safe. 100% money back guarantee if it doesn't meet expectations.