I purchased one those for a MT3 tailstock. It works well, but with a few considerations. Overall it is well made and a reasonable price, but I ended up modifying mine quite a bit. The die holders are specific for round dies so if you have any other type, most likely they will not fit. I ended up making several new die holders. The tap holders 0-1/4" and 1/4-1/2" are convenient and good quality (they now offer a 1/2-3/4"), if you were to make your own, probably would need to buy some T taps and remachine them. I did not care for the provided single tap handle, it is long as to rest against the carriage for power tapping. I drilled and tapped two hole and added a T handle that clears the carriage. I also made my own guide/hoder that fits into a chuck and only uses the tap heads, which I also use in my mill. It uses the same tap and die heads.
So overall a good starting point, but may need a bit of modification to suit your needs. Now that I am a bit more proficient at the lathe, I would probably make my own, but it is nice quality and reasonable for what is offered.
Mark
Additional dies through 1.5", additional T handle holder with guide rod that fits into a chuck. It use the tap heads and dies.
Added a T handles to the stock setup, works very nicely for manual tapping.
Machined a smaller T handle that fits into the chuck, uses either tap head or dies, also works well in the mill
Large 1.5" die holder that fits the MT3 guide rod.