Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Don't bother with this one
Review: This one is too cheap to be worthwhile. The moving parts in contact with each other are plastic, hence the tumbler slips. Furthermore the lip is screw on plastic w/o a seal and leaks. Consequently, you're left with a tumbler, which at a maximum, tumbles only a few small samples at a time before the weight and the volume of water overwhelms it. I don't even think the weight of a few samples cause the tumbler to slip; I think it was just poor design and the fact the moving parts in contact with eachother were plastic and just slip. There's no rubber seal on the lid so there's no way for water not to leak out. Now I will spend twice as much to get a real tumbler. Don't make the same mistake and disappoint your kids.
