The Pollen Master Tumblers are capable of processing up to 4500 grams of dry plant material at a time! The entire process takes only 15 minutes! The Pollen Master Tumblers feature a standard 145 micron screen. 125 Micron and 185 Micron screens are also available for all Bubble Magic Tumblers. Save time and money and tumble your flowers, leaves, and trim quickly and efficiently with no hassle! No messy bags, no water, and ice necessary. No more waste! Simply load your frozen plant material into the drum and let the motor do the work! Dry ice is an option as well!