CAPFEI Espresso Filter Paper 51mm for Portafilter 51mm, 100pcs Unbleached Round Coffee Paper Filters Puck Screen Portafilter Paper

Eliminating Channeling - Put a filter on the bottom can prevent the fine powder from blocking the basket thus improve the flow rate. Put a filter on the top is similar to a puck screen to improve water distribution to some extent. Resulting in a higher fat content in espresso and a more mellow coffee taste.
Size - The diameter of this espresso filter paper is 51mm which designed for 51mm portafilters/baskets. The [51mm] coffee filter also compatible with the bottom of the [54mm/58mm] portafilter.
Safety - Each espresso filter paper is selected from natural virgin pulp, chlorine-free.
Keeps Brew Head Clean - Avoid direct contact of espresso powder with the espresso machine shower head, and always keep the shower head clean and tidy.
Easy to Use - Compared to stainless steel puck screens, these paper espresso filters no longer require the metal puck screen to be removed from the coffee grounds for cleaning.