Key features PRECISION WATER DISTRIBUTION - Designed with a high-density, uniform perforation layout, this precision shower screen ensures even water dispersion across the coffee puck—reducing channeling, stabilizing extraction flow, and improving shot-to-shot consistency. EXACT 56.6MM ENGINEERED FIT - Manufactured to precise specifications (56.6mm outer diameter, 5.4mm height, 6.3mm center opening) to ensure a secure, flush fit inside compatible group heads, minimizing water bypass and pressure imbalance. STAINLESS STEEL CONSTRUCTION - Made from food-grade stainless steel for excellent durability, corrosion resistance, and thermal stability. Built to withstand repeated heat cycles and high-pressure brewing in commercial café environments. CLEANER GROUP HEAD & EASY MAINTENANCE - The precision-machined surface helps reduce coffee oil and residue buildup compared to standard stamped screens, allowing for easier cleaning and maintaining consistent water flow over extended use. Designed for commercial and prosumer machines, including: Nuova Simonelli: Appia / Aurelia / Musica / Oscar, Victoria Arduino: Black Eagle / White Eagle / Eagle One, Rancilio: Specialty, Bezzera: Ellisse，La Pavoni: Barretto (Please verify your machine’s required shower screen size before purchase.) Outer Diameter: 56.6 mm Center Hole Diameter: 6.3 mm Flange Height: 5.4 mm Filter Aperture Diameter: 3 mm Mesh Aperture Diameter: 0.35 mm Free shipping included. 30-day hassle-free returns.