Product review (5 stars): Product works, great company!
I bought these caps to cover small rust spots forming on the tips of our dishwasher rack.  We rent the home and knew the landlord would not want to replace the appliance.  But the rust was leaving spots on our expensive dishes.  I bought the pack of 25 caps only and glued them with a plumbers Goop product I already owned.  It worked fine, but I was short 2 caps in the packet.  The company immediately sent me the replacements, plus a couple extra.  Not many companies would do this.

Tips:  If you notice stains on your dishes, check the rack.  If you see rust, buy these caps or the cap and glue kit.  I recommend removing the dishwasher racks (easy) and inspect the entire rack.  If you notice wear on the joints/welds or main bars, buy the kit with the Ubergoop paint/glue.  Follow the directions to scuff and clean before gluing.  If your situation is like ours, you can save an otherwise good working dishwasher!