• 51 mm coffee dosing ring made of high-quality aluminum alloy, resistant to oxidation and corrosion, with a smooth and shiny surface. • The non-slip magnetic design with 4 magnetic beads allows for a firm and secure attachment to the metal portafilter, preventing accidental drops and making cleaning after use easier. • Provides precise coffee dosing, avoiding mess and waste, ideal for espresso machine accessories. • Allows for even distribution of ground coffee in the filter, keeping the workbench clean and tidy after grinding. • Multifunctional: suitable for grinding, spreading, and tamping coffee, compatible with coffee blenders, making preparation easy both at home and in coffee shops, restaurants, and bars. • Each ring weighs approximately 70 g and the package includes 2 pieces. • Size: 51 mm in diameter, suitable for 51 mm mobile filters. • Exquisite workmanship, simple and elegant design, durable and easy to use.