Durable, compact, and excellently crafted knock box by Rhinowares! The Knock Box has a silicone collar that protects the portafilter when knocking grounds out.  There is a non-slip, silicone base as well which keeps the knock box in place as you dispose of grounds.  This knock box, made in Australia, suits home brewers and professionals alike! The top can be easily removed to allow for easy access and the changing of a waste bag. Features Material: Stainless steel Non-slip silicone base Height: 165 mm Dishwasher safe