This is a video of the A.P.E. agricultural pollen extractor being dry sift hash machine used in a medical marijuana grow op. The trimmings are put into the barrel and sifted for their potency, with almost no damage done to the leaf. No more hand sifting! The A.P.E. agricultural pollen extractor is by far the most productive method I have employed for making concentrates from my trimmings. I am getting dry hash (kif) of the same potency I get from the my bubble bags, but waay more quantity. the site, www.agriculturalpollenextractor.com Enjoy!