Originally Posted by
icemilkcoffee
I am guessing the one that is labeled Shimano is in fact Shimano. The one labeled TZ is obviously not.
They all looks counterfeit.
See, e.g.:
RD-TZ50-GS (shimano.com)
Notice difference in, among other things, the cages between the one from the official Shimano site and the crap posted near the top.
At least they spelled Shimano correctly. That is not always the case.
Another B.S. thread by the OP.