This portafilter is compatible with a wide range of coffee machines from renowned brands, suitable for both commercial and home use with a 51/54/58MM size. Design Feature: Sleek bottomless handle (naked portafilter) reveals the beauty of the extraction process, helping you perfect your technique. 18g Basket: Ultra-fine filter ensures a smooth, intensely flavorful espresso that showcases the delicate nuances of your coffee beans. Purpose: Designed for espresso enthusiasts who value precision, artistry, and Italian craftsmanship. Overall Benefit: Elevate your espresso experience with this beautiful and precise tool – craft exceptional shots with Italian flair.   - 58mm Fits E61 Head Group Include: Italian Models: E61, Aibo, Rocket, Pegasus, Rancilio, Bezzera, La Pavoni Specialty Models: ECM, Flair 58, Profitec, Faema, Nuova Simonelli, WPM, Slayer, Lelit,  Additional Brands: Casadio, Ascaso, Sanremo Serie One, Basilica, Gemilai, Victoria Arduino, Ladetina, Royal series, Wingkin 210 (unique design), Maxim. Other Notable Brands: Odium, Kimberley, Wega, Ghost (by Kees van der Westen), La Detina, Iberital, XLVI, CIME, , Sunbeam Cafe Series, Solis Grind & Infuse Perfetta, Elektra Maxi, BFC, MKF - 58mm Fits La Marzocco: Compatible with: All La Marzocco Machines - 58mm Fits Gaggia: Compatible with: Gaggia Machines, suitable for both commercial and domestic use (58MM). Not Compatible: Gaggia Classic Evo, Gaggia Classic Pro - 58mm Fits Nuova Simonelli: Compatible with: Nuova Simonelli Machines - 58mm 3 Ears Fits Include: Compatible with 3 ears portafilter: Kitchenaid, Sunbeam, Barsetto, Breville Barista Mini/Max and most 58mm Espresso Machines with 3 ears portafilter.   - 54mm Fits Breville / Sage: Compatible with: La San Marco, Breville Sage the Barista Express, Barista Pro, Barista Touch, Bambino Plus, Infuser, and Duo-Temp Pro Espresso Machine models.   - 51mm Fits Delonghi: Compatible with: Delonghi Dedica Style Series EC680 and EC685, SMEG ECF01 Not Compatible: DeLonghi EC9xxx series ( EC9335, EC900, EC966, EC9115, EC9155...etc)