Can't turn crank in both directions. Other wise it works great. If you try to turn it in the opposite direction it comes unscrewed. I like my old one better as it doesn't have any screws and will go in both directions.
We've been frustrated with the range of sifters available recently so this is our third effort in the last year! It's nice and smooth and much quicker than most to use while measuring flour for bread and such, nice that we don't have to keep resetting the scale... handle is a little bit clunky to hold but otherwise would give it five stars, really quite a nice unit.