Product review (5 stars): Gets the job done!
I had one prong with rust on the tip in my 1 year old dishwasher.  This kit allowed me to quickly apply a cap and cover the rust before further damage could be done.  And there are enough prong caps to cover pretty much the whole dishwasher, so if i find more rusted spots, I can fix them, too.

You just need some sandpaper or an emery board to file away the rust prior to application.  Everything else is included.