Unlike conventional, this shower screen prevents uneven ( over / under) for perfectly balanced coffee flavors, meeting the demands of discerning users This 58mm E61 espresso machine shower screen set disperses water flows evenly to fully saturate coffee grounds, improving efficiency for richer flavor Great for coffee enthusiasts and professional baristas seeking great result Use rust resistant stainless steel for heat durability and a silicone gasket for leak proof sealing, this shower screen ensures long time and a secure fit The designed filter ensures balanced water dispersion across coffee grounds, reducing channeling and increasing rate for enhanced sweet and taste Designed for 58mm E61 group heads, fits most espresso machines, making it great for home use, cafes, and specialty coffee shops to elevating brewing and enjoyment