The Spring Clean™ allows a full 200mL of water to build up in a spring-loaded reservoir and releases that full amount back through the brewing pipe over the 3-way solenoid and into your drip tray. That means less time spent cleaning, and 20x the volume of water used to clean per cycle. A spring clean a day keeps the technician away. Fits 58mm machines that can use E61 compatible portafilters, and utilize a pump and backflush system for cleaning and maintenance. This includes most La Marzocco (all except KB-90) and Decent compatible. Please Note: Does not fit Gaggia Classic Pro, Breville and machines with Bezzera BZ brew groups. If your machine doesn't work with "E61 compatible portafilters", the Spring Clean will not work with your machine. Please confirm before purchasing.