Thanks!!!! https://www.amazon.com/Jugs-Yellow-...words=dimpled+baseballs+for+pitching+machinesThese look like batting cage balls. You might be able to buy them from a local batting cage.
Glad you found them. I know I didn't spend that much though.Thanks!!!! https://www.amazon.com/Jugs-Yellow-...words=dimpled+baseballs+for+pitching+machines
Kinda spendy but they last forever and they are handy to take along. Then I saw this is the price for a dozen!