Enhance the Experience:Same concept as puck screen, better distribution of water flow from shower head, more espresso extraction. Safety:Each 58mm espresso filter paper is selected from natural virgin pulp, chlorine-free. Convenience: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. Better Clean:Avoid direct contact of espresso powder with the espresso machine shower head, and always keep the shower head clean and tidy. Custom Edition:Designed to compatible with 58mm Portafilter including many of the E61, Flair 58, ECM, Rocket, Sanremo, Synesso, Slayer, VBM, etc. Espresso Machine models. Enhance the Experience - Same concept as puck screen, better distribution of water flow from shower head, more espresso extraction.