The Eureka ORO dosing cup is made of stainless steel. With a capacity of 45 g (which is identical to the capacity of the hopper the Eureka ORO "Mignon Single Dose" coffee grinder is equipped with), it lets you transfer ground coffee straight into the portafilter, all the while keeping your workspace clean and tidy.***Now a leading coffee grinder manufacturer, "Eureka" has been designing modern and elegant grinders since 1920. Founded in Florence by Aurelio Conti, the company started its activities as a manufacturer specialising in espresso grinders — these quickly turned into a symbol of unmatched excellence.