Uses a M12 thread metric bolt portafilter handle threads straight in. The wings measure 6.3 mm thick, and are positioned perpendicular (at 3 and 9 o'clock) to the handle. 3/8 thread for spout. Accepts any standard basket.
Also suitable for some, but not all, models of Bezzera, Expobar, Fiorenzato, Grimac, Reneka and Sanremo - pretty much any "E61" style group.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.