Edge ø 70 mm – height 26 mm – 661 holes Aisi steel 304 – food-safe certified. Holes made with a precise diameter and number specifically designed and tested to to ensure homogeneous extraction and a balanced quantity of soluble in cup. Detached from the filter edge and distributed towards the center to eliminate channeling. Non-stick coating made of NANOQUARTZ increases the resistance to corrosion and chemical reaction.