Our boar-bristle brush loosens coffee and spices from the two facing disks of your burr grinder, ensuring proper function over time. Handle is 18/8 stainless steel. Hand wash. 4" long. Designed for cleaning coffee and spices from burr grinders. Boar-bristle brush is able to clean tiny crevices between grinder disks. 18/8 stainless-steel handle.