Yes, some do. Futurola makes six commercial shredder varieties, two of which remove stems. The Futurola Super Original Shredder grinds and removes stems from 3lbs of flower in seven seconds. The Super Mega Shredder grinds and removes stems from 5lbs of flower in the same amount of time. The other three varieties, the Mini Shredder, the Original Shredder, and the Mega Shredder, only shred. But they can do 0.7lbs, 3lbs, 5lbs all in seven seconds.