The Natural Response:
Not all bras have the same distance between hooks. The 4085M was made to fit most of the bras on the market.
Janet from Hudson,MA,USA
HerRoom Response: Bras with just 2 hooks in back can have varying distances between the hooks.
Naural Response: The Natural sells two different widths of 2 Hook Bra Extenders. It sounds like you have purchased the 1/2” spacing, and you would be better off with the 3/4” spacing.
Laurel from California