An 8 mm female thread accepts the portafilter handle. This is specifically list for the Futurmat (Gaggia Spagna, Mairali, Italcrem and Visacrem) Spanish machines, but will also fit the Faema E61, as well as some other manufactures groups. It does not include the F_353 portafilter spring or portafilter handle. Only fits an 8 mm portafilter handle, part F_163 or handles with the long F_1166 bolt that goes through them.