These are terrible!
Unlike the old design:
1.They are heavy and clunky to handle.
2.They won't lock open while you fill the machine.
3.Once filled, although they are supposed to lock closed, if you don't hold them closed they spit out the tobbaco before you have chance to get a paper in.
4.They roll too loosely.
5.If you manage to muddle through a whole month or so, the plastic will split anyway.
The old design may have looked less sturdy but at least they worked!