58mm One Cup - Dual Wall Filter , Fits Brevile BES900XL, BES920XL
WILL NOT FIT
50mm diameter portafilter baskets.
Breville Espresso Machines: BES820XL, BES830XL, 800ESXL, Café Roma ESP8XL, Café Modena ESP6SX
54mm diameter portafilter baskets
Breville Espresso Machines: BES860XL, BES840, BES870XL
58mm diameter portafilter baskets
Breville Oracle BES980XL