Automatic Portafilter Cleaner Suitable for cleaning 51-58mm portafilters basket. Designed to disposal espresso coffee puck in portafilter basket quickly, essential barista tool for effective work process. Easy to Operate ? Turn on button; ? Choose the scraper suitable for your portafilter and scrape out coffee grounds firstly; ? Use the brush side to cleaning out residual coffee grounds in portafilter basket.