Even out ground coffee in the portafilter with just a few easy turns! Ground coffee distribution tool made for 57 mm semi automatic coffee machines\' portafilters will easily even out ground coffee for a perfect cup of your favourite drink.Badly distributed ground coffee results in unevenly distributed water during preparation, which is the main reason why your favourite coffee will not reveal its best qualities. After evening out ground coffee with this tool and tamping it with a tamper, it will ensure even water distribution and a perfect coffee beverage!Warranty: 24 months for home use and 12 months for commercial use.