Product review (5 stars): Cap your Tips!
DO add these to your racks before they wear at the tips of the tines.  Get more years of service from the racks.  My washer is 24 years old now.  Replaced bottom rack some years ago for $100 because I didn't add these soon enough.  Will use these on the top rack tines to cover temporary Rack-Cote repair of rusting tips to improve aesthetics.  Then will add to new top rack when I break down and buy that.  These are a tight fit.  I used a spritz of silicone spray to slide onto tips.  Ensure they are fully seated by twisting and pushing down again after you have pushed them down.  I have not had them pop off through three cycles of washing.  Will report back if they have any problems.