Wide Application: Compatible with all brands of 54mm size portafilter. Specially designed for Breville 8 series coffee machines. See the third picture for detailed dimensions. Upgrade Design: Specially designed ring structure for breville coffee machine, can directly start the coffee machine, especially suitable for 54mm breville coffee machine with grinding function, such as BES 870. High Capacity: The large capacity is perfect for one or two cups of espresso powder. Premium Materials: Made of food-grade aluminum alloy material, safe and harmless, matte silver design has excellent texture. Nice Gift: It is a good gift for your coffee-loving friends, suitable for home baristas and professional coffee shops. Portafilter Dosing Cup