The Baratza Sette 30 is a convenient bean grinder to use with your piston machine. The bean grinder quickly grinds the beans with the durable 40-millimeter conical grind discs. You can measure the right amounts with the very accurate timer. Hang the filter holder underneath the grinder so the ground coffee falls directly into the filter. Tamp it, and you can make coffee from it right away. Choose from 30 grind settings for the perfect cup of coffee. The finer the grind, the slower the water will run through the coffee, and the stronger the coffee will be.