This portafilter is compatible with a wide range of coffee machines from renowned brands, suitable for both commercial and home use with a58MMsize. The compatible coffee machine models include: Italian Models:E61, La Marzocco, Aibo, Rocket, Pegasus, Rancilio. Gaggia Machines:Suitable for both commercial and domestic use (58MM). Specialty Models:Pandora, Legend, Kaffa, Gemilai, Penguin CRM312A, Wingkin 210 (unique design). Additional Brands:Casadio, Ascaso, Sanremo Serie One, Compak, ECM (including single head models), Royal series, Melitta (including Wega Picasso single head models). Other Notable Brands:Odium, Kimberley, Wega, Ghost (by Kees van der Westen), La Detina, Iberital, XLVI, CIME, Lelit, Victoria Arduino, BFC, MKF, Slayer, Green Rongka. Not Compatible: Kanglu CC102 and Maxtor EML models.