The belts I received were not the ones I thought I ordered.  I searched for belts to fit a model of self-propelled Hoover upright.  I made the unfortunate  assumption that Amazon's search engine would produce the proper belt.  When these popped up I ordered them.  It turns out that the belts are for a Hoover that is not self propelled.  As I was the one who made the mistake, I would have to pay shipping charges that amount to more than 50 percent of the purchase price of the items to return them.  So I didn't return them.  I'll just pick some up at my local Walmart and consider that this order was part of my education on the limits of trusting a website search engine.  Lesson learned.