These are really just the best way to break up flower period. It comes out nice and fluffy. Most stems stay up top too. Flowermill is great to deal with as a bonus.
This is hands down the smoothest, easiest well crafted device I have used. Well worth the money.
Grinds perfectly and with ease. Well worth the money ! If using for a Duncan or pre-rolls, I'd get the finer plate - medium was a bit too coarse for me. No evidence of any "metal shavings", either. Love this thing!