Professional 57mm bottomless (naked) portafilter designed for improved espresso shot visibility. This chrome-plated brass portafilter accepts single, double, or triple shot baskets and holds 14 grams of ground coffee, allowing taller cup placement. Compatible with: Lelit espresso machines, La Pavoni Domus, Francis Francis X1 (brass boiler 2nd and 3rd generation models) Made in Italy with heavy brass construction for durability. Note: This portafilter will not fit Francis Francis X1 models with aluminum boilers (1st generation, 1999-early 2004).