Filter basket with Nanoquartz coating developed by special IMS Filtri project E&B Lab in Italy. E&B Lab filter basket with largest filtration area of 715 holes enables extraction of much finer grind. Double espresso cylindrical filter basket is ridgeless with flat bottom. This shape creates a compact coffee pod in order to get a better extraction. Fits most E61 58mm group head machines. Made in Italy. NANQUARTZ COATING The main advantage of Nano technology is its hydrorepellent effect. This coating makes it significantly easy to remove used coffee pods from a filter basket. Technology improves filter surface making it more antibacterial and easier to clean. Makes basket's surface smoother Increases flow Coffee and oils does not stick to the surface Basket remains cleaner Facilitates the coffee pod removal from the filter