[Large Capacity]:The espresso dosing funnle internal space is large enough to hold more coffee powder at one time.Anti-flying [Apply]:58mm espresso coffee dosing ring is a perfect coffee accessories,suitable for espresso coffee machine 58mm portafilter. Description: The dosing rings is your good companion of coffee, which is more convenient and easy to use and greatly saves your time and money. Made of high quality aluminum alloy material, the service life is longer. And it's easy to clean.