Please realize this when you order. The hash pies 6 stage wet or dry pollen seperator is an amazing separator that gives you very high yielding results, ready to go in minutes when dry sifting. Not days compared to washing methods. Though that is also possible with this set. Stainless steel lab grade screens. 220 micron stainless steel screen, 160 micron stainless steel screen, 125 micron stainless steel screen, 97 micron stainless steel screen, 75 micron stainless steel screen and 48 micron stainless steel screen.