FYI: We have a Hoover Air Cordless model number BH50121. I have a love/hate relationship with my vacuum cleaner. First I had to auto-correct the word "vacuum". Second, I hate vacuuming. Third, this vacuum cleaner (if I keep using that word, maybe I'll remember how it's spelled?) attacks those brushes. Hoover has a major design flaw and I doubt this will be my last purchase of this brush for my vacuum. For the record, this is the THIRD roller brush I have had to purchase for this vacuum and I have only had it for 3 years. I also had to buy another battery for it as one of the two batteries I bought died, but that's another review. Now that I know I can buy this brush roll from Revain, and that this particular model fits my vacuum, I'll probably buy another roll to have a backup. I find they usually last about a year.