This Precision shower screen gives off an exceptionally even water distribution, helping improve extractions. It is an essential espresso shower screen for those in search of the ultimate cup. FEATURES: External Diameter: 57 mm | Inyernal Diameter: 56mm | Wall Height: 2.8 mm | Central Hole: 5.5 mm INTEGRATED MEMBRANE: The membrane is created directly within the body of the shower; it therefore does not require any blocking. SUPPORT DISC PERFORATION Perforations: Ø 3 mm, 98 holes | Distribution: Circular COMPATIBILITY: Rancilio | Magister | Promac | Made in Italy by Industria Matariali Stampati SpA, Manufacturer: IMS