Same concept as puck screen, better distribution of water flow from shower head, more espresso extraction. At the same time, better clean the coffee machine shower head. Each 58mm espresso filter paper is selected from natural virgin pulp, chlorine-free. Each piece of wood is carefully selected and of high quality. Compared with the stainless steel ice puck screen, these paper espresso filters no longer need to remove the metal ice puck screen filterfrom the coffee grounds for cleaning. Paper filter is more gentle than stainless steel puck screen, better protects the coffee machine, and extends the service life of the machine. Designed to compatible with 58mm Portafilter including many of the E61, Flair 58, ECM, Rocket, Sanremo, Synesso, Slayer, VBM, etc. Espresso Machine models.