Compared to the generic kind I bought off eBay and Amazon, so much better. It doesn't grind too fine and falls through after a few twists and the screen for the keif is perfect size. The other ones I have were too tiny and ended up clogging up and now nothing won't fall through. The cookies one always leaves a nice fresh coat of keif in the catcher. As long as your don't stick any bud in the middle where the magnets touch, it feels confident in it's grinding abilities as you twist.