Portafilter Single Spout Full Size Non-stick NANOQUARTZ coating increases the resistance to corrosion and to chemical reaction. Thanks to the internal and external coating the surfaces are completely non-stick, the water flow is constant and uniform. It is food-safe certified. Fits: Portafilter bodies with Standard 3/8 BSP fitting (which is found on the majority of commercial machines and some home units as well). For smaller Portafilters such as La Pavoni home levers machines, see “mini.”