Durable Measuring Cup Stainless Steel Coffee Measuring Cup Powder Feeder Part for 51 mm Coffee Machine Tool Description. High quality material: made of high quality stainless steel, non-toxic and non-hazardous, ready to use Convenient Easy to receive the grinder grind coffee powder with this powder cup. EASY TO CLEAN: Stainless steel makes cleaning easier. You only need to rinse with water or put it in the dishwasher to clean it. Long-lasting This powder cup is made of stainless steel for wear and corrosion resistance as well as a polished surface. For use in espresso machines for easy coffee. Specifications. Material: stainless steel Mouth size: 51 mm Colour: Black Package includes: 1 x coffee catcher Notes. Conversion: 1 inch = 2.54 cm, 1 cm = 0.393 inch Please allow a slight error of 0-1 cm due to manual measurement.