Bests & Worsts Reviews from Amazon

This tumbler is primitive, and the parts are not designed to be fit together and disassembled easily as you need to do frequently when changing out the contents. Worst, the tumbler is a simi-rigid rubber, including the bottom. That's a fatal design flaw--when you put the drum together and seal it tight, and place it in the tumbler and run it, over time the contents mildly heat up from the friction of the contents. The drum expands, the bottom pushes out--and the space that contains the drum is so tight that it seizes up and stops tumbling. An all-steel drum might work with this design, but not a rubber one. Note the warranty: there isn't one. If you buy it, you're stuck. I'd gladly return it, but I can't.