It is also compatible with the following models, and all the H Free 500 range of vacuums:
HF522BH
HF522BEN
HF522UPT
HF522PTE
These carefully selected items have been recovered from genuine Hoover customer returns, they may have light marks & or show slight signs of use or no use at all. The listing is for a replacement extension tube attachment for the Hoover H-Free 500 range, in virtually new condition. Identical to what you see in the photos.