How do I choose the best fitting Sibarist Espresso Filters?
....due to the different designs of espresso machine and baskets manufacturers, the SIBARIST ESPRESSO filter diameters do not correspond to your portafilter diameter. Instead, they correspond to the inner bottom basket diameter, so please size your inner basket diameter to choose the filter size. The filter diameter needs to fit on the inside bottom basket diameter.
Measure your inner basket diameter to choose your filter size. See the instructions below.
How can I know which filter diameter I need? Download the diameter template here