Product review (5 stars): Kit woked perfectly.  But ask yourself if you really want to do this...
This kit was received quickly and was exactly as described.  I googled the individual part numbers and discovered that you could get the parts for about 60% of what I paid (maybe plus shipping...didn't get that far) so the premium you pay here to get a kit that you know fits your machine is well worth it, in my opinion.  Otherwise I don't know how you'd know what to get.

That said, think carefully about whether it's worth it.  In my case, I had an older Whirlpool Duet (purchased in 2004).  I was on the fence a bit, but decided to replace the bearings rather than get a whole new washer (and dryer).  All I can say is, it's a job.

There's a ton of parts to remove to get the drum out, and on an old washer, nothing is super clean, and there is residual water in hoses.  Because I was doing this job myself with no help, I removed all the weights before I removed the drum, but it's still heavy.

Getting the inner drum (shaft) out of the old bearing took a lot of hammering and banging, and dented/broke some of my wood blocks.  I did even spray everything with WD40 and let it soak overnight. Maybe I should have used something else.  It was almost at the point where I was going to try to create a makeshift press with a hydraulic auto jack, some wood, and the I-Beam in my garage, but finally the hammering did the job.  Removing the old bearings themselves was just a little easier...but only slightly.

But the "spyder" attached to the back of the inner drum (which, in my case, appeared to be made of cast aluminum and was removable from the drum) was pretty disgusting...took a few hours to try to scrape all the crud (years of old soap residue) from all the nooks and crannies.

Since the drum does have a lifetime warranty (and the "spyder" was rather corroded) I might have been able to talk Whirlpool into sending me a replacement...but the warranty department isn't open on weekends, and I didn't want to take the chance that I would be without a washer for a week or longer, so finally I just cleaned it up best as I can and put it all back together.  Only one screw left over.

Bottom line: it appears that I now have a functioning washer again that no longer sounds like an airplane taking off.  But it took quite a lot of time and effort, and I have scrapes on my arms and legs (metal is sharp) to remind me of all the effort.  If I had it to do over again...well, a new set looks mighty attractive.